LOS ANGELES — A man who allegedly threw chunks of concrete at officers conducting an immigration enforcement operation in Paramount was taken into custody Wednesday at the U.S.-Mexico border in a negotiated surrender, the FBI announced.

A man accused of throwing chunks of concrete at federal agents during a standoff in Paramount last month was taken into custody Wednesday at the U.S.-Mexico border in a negotiated surrender, the FBI announced.

Elpidio Reyna, a violent rioter who was captured on video throwing rocks at the windshields of moving Border Patrol vehicles in Los Angeles, was arrested on Wednesday at the U.S.-Mexico border.