A government soldier takes a position with a machinegun at the porch of a house during fighting with Muslim rebels from the Moro National Liberation Front (MNLF) in Zamboanga city, southern Philippines, September 15, 2013. A week of violence in the southern Philippines has undercut hopes of lasting peace in the resource-rich region and exposed the government to criticism for underestimating rogue Muslim rebels who feel ignored by a landmark deal last year. REUTERS/Erik De Castro (PHILIPPINES - Tags: CIVIL UNREST CONFLICT POLITICS)

Members of the Philippine marines hold their weapons aboard a truck as they block a road during fighting between government soldiers and Muslim rebels of Moro National Liberation Front (MNLF) in Zamboanga city, southern Philippines, September 15, 2013. A week of violence in the southern Philippines has undercut hopes of lasting peace in the resource-rich region and exposed the government to criticism for underestimating rogue Muslim rebels who feel ignored by a landmark deal last year. REUTERS/Erik De Castro (PHILIPPINES - Tags: CIVIL UNREST CONFLICT POLITICS)

Government soldiers of Task Force Zamboanga (TFZ) feed pigeons with bread crumbs near a military command post during a lull in fighting with Muslim rebels of Moro National Liberation Front (MNLF), in Zamboanga city in southern Philippines September 16, 2013. REUTERS/Erik De Castro (PHILIPPINES - Tags: CIVIL UNREST CONFLICT POLITICS MILITARY ANIMALS)

Government soldiers of Task Force Zamboanga feed pigeons with bread crumbs near a military command post during a lull in fighting with Muslim rebels of Moro National Liberation Front (MNLF), in Zamboanga city in southern Philippines September 16, 2013. REUTERS/Erik De Castro

An armoured vehicle drives past government soldiers for another offensive against the Muslim rebels of Moro National Liberation Front (MNLF) positions in Zamboanga city in southern Philippines September 16, 2013. Philippine forces launched air strikes on Monday to root out rogue Muslim rebels from a southern city, stepping up efforts to end more than a week of clashes that have killed scores of people. The army said at least 62 people have been killed, including 51 of the independence-seeking rebels and five civilians. REUTERS/Erik De Castro (PHILIPPINES - Tags: CIVIL UNREST CONFLICT POLITICS MILITARY)

A government soldier smokes a cigarette during a lull in fighting with the Muslim rebels of Moro National Liberation Front (MNLF) in Zamboanga city in southern Philippines September 16, 2013. Philippine forces launched air strikes on Monday to root out rogue Muslim rebels from a southern city, stepping up efforts to end more than a week of clashes that have killed scores of people. The army said at least 62 people have been killed, including 51 of the independence-seeking rebels and five civilians. REUTERS/Erik De Castro (PHILIPPINES - Tags: CIVIL UNREST CONFLICT POLITICS MILITARY)

An armoured vehicle drives past government soldiers for another offensive against the Muslim rebels of Moro National Liberation Front (MNLF) positions in Zamboanga city in southern Philippines September 16, 2013. REUTERS/Erik De Castro

Police inspect the scene of a mortar attack by Muslim rebels of Moro National Liberation Front (MNLF) in downtown Zamboanga city in southern Philippines September 16, 2013. (REUTERS/Erik De Castro)

Police inspect the scene of a mortar attack by Muslim rebels of Moro National Liberation Front (MNLF) in downtown Zamboanga city in southern Philippines September 16, 2013. (REUTERS/Erik De Castro)

Government soldiers of Task Force Zamboanga feed pigeons with bread crumbs near a military command post during a lull in fighting with Muslim rebels of Moro National Liberation Front (MNLF), in Zamboanga city in southern Philippines September 16, 2013. (REUTERS/Erik De Castro)

Government soldiers of Task Force Zamboanga (TFZ) take cover during fighting with Muslim rebels of Moro National Liberation Front (MNLF) in Zamboanga city in southern Philippines September 16, 2013. (REUTERS/Erik De Castro)

A government soldier of Task Force Zamboanga (TFZ) takes cover during fighting with Muslim rebels of Moro National Liberation Front (MNLF) in Zamboanga city in southern Philippines September 16, 2013. (REUTERS/Erik De Castro)

Government soldiers of Task Force Zamboanga (TFZ) fire a 60mm mortar round towards the Muslim rebels of Moro National Liberation Front (MNLF) positions in Zamboanga city in southern Philippines September 16, 2013. (REUTERS/Erik De Castro)

Smoke billows from burning houses in a residential district as firefight rages between government soldiers and Muslim rebels of Moro National Liberation Front (MNLF) in Zamboanga city in southern Philippines September 16, 2013. (REUTERS/Erik De Castro)

A government soldier stands guard outside a tourist police station in Fort Pilar near a wall destroyed by fighting with Muslim rebels from the Moro National Liberation Front (MNLF) in Zamboanga city in southern Philippines September 15, 2013. (REUTERS/Erik De Castro)

A government soldier carries a plastic bag containing grenade ammunitions for his comrades during a lull in fighting with Muslim rebels from the Moro National Liberation Front (MNLF) in Zamboanga city in southern Philippines September 15, 2013. (REUTERS/Erik De Castro)

A government soldier looks out from a partially destroyed wall of a house, caused by fighting between government soldiers and Muslim rebels from the Moro National Liberation Front (MNLF), in Zamboanga city in southern Philippines September 15, 2013. (REUTERS/Erik De Castro)

A government soldier takes up position with a machinegun on the porch of a house during fighting with Muslim rebels from the Moro National Liberation Front (MNLF) in Zamboanga city in southern Philippines September 15, 2013. (REUTERS/Erik De Castro)

Residents who were displaced from their homes due to fighting between government soldiers and Muslim rebels from the Moro National Liberation Front (MNLF) wait for the distribution of food at a sports complex, which has been turned into an evacuation centre, in Zamboanga city in southern Philippines September 14, 2013. (REUTERS/Erik De Castro)

A government soldier shouts at his comrades to retreat after their unit tried to assault the positions of Muslim rebels from the Moro National Liberation Front (MNLF), during a gunbattle in Zamboanga city in southern Philippines September 13, 2013. (REUTERS/Erik De Castro)

A government soldier takes up position with a machinegun on the porch of a house during fighting with Muslim rebels from the Moro National Liberation Front (MNLF) in Zamboanga city in southern Philippines September 15, 2013. (REUTERS/Erik De Castro)

Philippine Red Cross personnel carry a wounded colleague on a stretcher after a mortar attack by Muslim rebels near the scene of fighting between government soldiers and Muslim rebels from the Moro National Liberation Front (MNLF) in Zamboanga city in southern Philippines September 13, 2013. (REUTERS/Erik De Castro)

Philippine Red Cross personnel react after a mortar attack by Muslim rebels, near the scene of fighting between government soldiers and Muslim rebels from the Moro National Liberation Front (MNLF) in Zamboanga city in southern Philippines September 13, 2013. (REUTERS/Erik De Castro)

Government soldiers run for cover as their comrades (L) lie on the ground after they were wounded in a mortar attack by Muslim rebels at the scene of fighting between government soldiers and Muslim rebels from the Moro National Liberation Front (MNLF) in Zamboanga city in southern Philippines September 13, 2013. (REUTERS/Erik De Castro)

A man runs to fetch water to douse burning houses in a residential district, caused by a firefight between government soldiers and Muslim rebels from the Moro National Liberation Front (MNLF), in Zamboanga city in southern Philippines September 12, 2013. (REUTERS/Erik De Castro)

Residents evacuate into the streets as houses burn in a residential district after a clash between government soldiers and Muslim rebels from the Moro National Liberation Front (MNLF) in Zamboanga city in southern Philippines September 12, 2013. (REUTERS/Erik De Castro)

Smoke billows into the air behind government soldiers as fire rages in a residential district after a clash between the government soldiers and Muslim rebels from the Moro National Liberation Front (MNLF) in Zamboanga city in southern Philippines September 12, 2013. (REUTERS/Erik De Castro)

Members of Special Action Police (SAF) seek cover behind an armoured vehicle from Muslim rebels' sniper fire in Zamboanga city in southern Philippines September 12, 2013. (REUTERS/Erik De Castro)

A government soldier inside an armoured vehicle peers out of a bulletproof window, which was damaged during a firefight with Muslim rebels from Moro National Liberation Front (MNLF), in a residential district in Zamboanga city in southern Philippines September 12, 2013. (REUTERS/Erik De Castro)

Government soldiers inside armoured vehicles take part in a firefight with Muslim rebels from Moro National Liberation Front (MNLF) amidst smoke from burning houses in a residential district in Zamboanga city in southern Philippines September 12, 2013. (REUTERS/Erik De Castro)

Members of Special Action Police (SAF) seek cover behind an armoured vehicle from Muslim rebels' sniper fire in Zamboanga city in southern Philippines September 12, 2013. (REUTERS/Erik De Castro)

A weapon concealed in a bag of rice carried by a Moro National Liberation Front (MNLF) rebel lies on a road after the rebel was captured at a military checkpoint in downtown Zamboanga September 11, 2013. (REUTERS/Erik De Castro)

Government soldiers stand guard at a port in downtown Zamboanga September 11, 2013. Moro National Liberation Front (MNLF) rebels seeking to declare an independent state put a dozen civilians tied together by rope on display as a human shield on Wednesday as a standoff with security forces in a southern Philippine city entered its third day. (REUTERS/Erik De Castro)

Residents carry their belongings past government soldiers taking up positions in downtown Zamboanga September 10, 2013. Houses were set ablaze on Tuesday as fighting erupted between Philippine security forces and Muslim rebels occupying five districts of the southern Philippine city of Zamboanga, witnesses said. (REUTERS/Josh Lemiere)

A policeman mans a machinegun at a checkpoint in Ipil, Zamboanga del Sur, which leads to Zamboanga city September 10, 2013. Houses were set ablaze on Tuesday as fighting erupted between Philippine security forces and Muslim rebels occupying five districts of the southern Philippine city of Zamboanga, witnesses said. REUTERS/Erik De Castro (PHILIPPINES - Tags: CIVIL UNREST POLITICS CRIME LAW) - RTX13FO7

ËA hooded government soldier takes up position opposite a mosque where Moro National Liberation Front rebels are believed to be holed up in downtown Zamboanga September 10, 2013. Houses were set ablaze on Tuesday as fighting erupted between Philippine security forces and Muslim rebels occupying five districts of the southern Philippine city of Zamboanga, witnesses said. REUTERS/Erik De Castro (PHILIPPINES - Tags: CIVIL UNREST POLITICS MILITARY) - RTX13FOE

Government soldiers rest under an armoured vehicle during a lull in their operation against the Muslim rebels in Zamboanga city, in southern Philippines September 11, 2013. Moro National Liberation Front gunmen, seeking to declare an independent state, put a dozen civilians tied together on display as a human shield on Wednesday as a standoff with security forces here entered its third day. (REUTERS/Erik De Castro)

Government soldiers take positions at a military checkpoint in downtown Zamboanga September 11, 2013. (REUTERS/Erik De Castro)

Residents believed to be hostages and used as human shields of Moro National Liberation Front rebels wave white cloth and shout to the government soldiers to "stop firing" while standing in the rebels' positions in downtown Zamboanga city, in southern Philippines September 11, 2013. (REUTERS/Erik De Castro)

Government soldiers take a rest during a lull in their operation against Muslim rebels in downtown Zamboanga September 11, 2013. (REUTERS/Erik De Castro)

Villagers rest at Zamboanga port after fleeing their homes due to fighting between Moro National Liberation Front (MNLF) rebels and government soldiers in Zamboanga city September 11, 2013. (REUTERS/Erik De Castro)

Residents arrive at a stadium that has been turned into a evacuation centre after fleeing their homes due to fighting between Moro National Liberation Front rebels (MNLF) and government soldiers in Zamboanga city September 11, 2013. (REUTERS/Erik De Castro)

Moro National Liberation Front (MNLF) rebels lie on the ground after they were captured at a military checkpoint in downtown Zamboanga September 11, 2013. (REUTERS/Erik De Castro)

A local government town hall occupied by Muslim rebels burns during fighting between government soldiers and the rebels in downtown Zamboanga September 11, 2013. (REUTERS/Erik De Castro)

Paramedics carry on a stretcher a wounded Moro National Liberation Front rebel after he was captured at a checkpoint in downtown Zamboanga September 11, 2013. (REUTERS/Erik De Castro)

A policeman guards Moro National Liberation Front rebels captured at a police checkpoint in downtown Zamboanga September 11, 2013. (REUTERS/Erik De Castro)

Smoke rises after a local government town hall occupied by Muslim rebels got burnt during fighting between government soldiers and the rebels in downtown Zamboanga September 11, 2013. (REUTERS/Erik De Castro)

Government soldiers aim their weapons towards the position of Muslim rebels during a battle in downtown Zamboanga September 11, 2013. (REUTERS/Erik De Castro)