LOS ANGELES (AP) — About 90 members of the California National Guard and over dozen military vehicles like Humvees are helping protect immigration officers Monday as they carry out a raid in a Los Angeles park, defense officials said.

Armed US troops have been deployed to Los Angeles to protect federal officials in an immigration enforcement operation. The 90 military personnel are members of California’s National Guard and have set up a perimeter around immigration officers on Monday.

Dozens of immigration agents, some on horseback, others carrying rifles in armored vehicles, swept through MacArthur Park.