Woman arrested after bomb threat prompts evacuations of 2 downtown LA buildings

People who were evacuated from a federal building and a nearby building wait in front of the U.S. Courthouse in downtown Los Angeles on Wednesday, May 20, 2015. Police have arrested a woman who they say made a bomb threat, prompting two buildings to be evacuated and streets to be closed. Police Officer Tony Im says the woman was arrested Wednesday about three hours after making the threat in the lobby of a federal building around 11 a.m. (AP Photo/Richard Vogel) (The Associated Press)

People who were evacuated from a federal building and a nearby building wait in front of the U.S. Courthouse in downtown Los Angeles on Wednesday, May 20, 2015. Police have arrested a woman who they say made a bomb threat, prompting two buildings to be evacuated and streets to be closed. Police Officer Tony Im says the woman was arrested Wednesday about three hours after making the threat in the lobby of a federal building around 11 a.m. (AP Photo/Richard Vogel) (The Associated Press)

A woman sits in front of the downtown Los Angeles Federal Building with a package Wednesday, May 20, 2015. Police Officer Tony Im said the woman was arrested Wednesday about three hours after making a bomb threat. The threat prompted two buildings to be evacuated and streets to be closed in downtown Los Angeles. (AP Photo/Nick Ut) (The Associated Press)

Police have arrested a woman who they say made a bomb threat, prompting two buildings to be evacuated and streets to be closed in a bustling area of downtown Los Angeles.

Police Officer Tony Im says the woman was arrested Wednesday about three hours after making the threat in the lobby of a federal building around 11 a.m. No one was hurt.

Television news helicopters showed the woman wearing a backpack sitting and standing on the empty steps of the building as police surrounded the area.

Police later sent in a robot that approached the woman with a phone, but police said she didn't want to talk.

The buildings that were evacuated are near City Hall and a federal courthouse. A number of streets were closed in the area.