U.S. Border Patrol Sector Chief Gregory Bovino led agents in arresting at least one person Thursday outside a news conference held by top California Democrats today at the Democracy Center of the Japanese American National Museum in Little Tokyo.

A group of masked U.S. Border Patrol agents showed up in trucks outside of the press conference at the Japanese American National Museum.

Dozens of U.S. Border Patrol agents showed up Thursday morning in downtown Los Angeles, where Gov. Gavin Newsom and other California political leaders were speaking at an event, and detained at least one person in the latest high-profile immigration enforcement operation in the city.