UPDATE 1-One killed by Union Pacific train in Los Angeles county

(Adds details from company statement throughout)

Jan 24 (Reuters) - A train struck and killed a person in El Monte, California, shutting down the railroad line, the train's operator, Union Pacific, said on Wednesday. It was not immediately clear if the victim was on foot or in a car but the company said the accident did not happen at a railway crossing.

The Governor's Office Emergency Services said the incident occurred at around 9 a.m. near Arden drive and Railroad drive, and the city's fire and police departments were responding.

"Union Pacific is working with local authorities to understand what led up to the incident," the company said in an emailed statement. (Reporting by Deep Vakil and Rahul Paswan in Bengaluru; Editing by Sandra Maler)