Barnes & Noble has apologized after a senior citizen said staff at one of the retail giant's Arizona stores ejected him because he was on his own in the children's area. Omar Amin claimed a store worker told him a female shopper had complained he was in the children's area in the store in Scottsdale, The Arizona Republic reported. The 73-year-old, who was alone at the time, said he was in the store to buy books for his two grandchildren, who live in Wisconsin. He told the newspaper, "Men alone cannot be by themselves in the children's area." Mark Bottini, Barnes & Noble vice president and director of stores, issued a statement Monday apologizing to Amin. "We want to apologize to Dr. Amin for a situation in which Dr. Amin was asked to leave the children's section of our Scottsdale, Arizona store," Bottini said. "We should not have done so. It is not our policy to ask customers to leave any section of our stores without justification. We value Dr. Amin as a customer and look forward to welcoming him in any of our stores."