The FBI is offering a $50,000 reward in the search for someone who appeared to fire a pistol at federal immigration agents during protests Thursday near Los Angeles, the U.S. attorney for the region said.

Federal immigration agents descended on a farm outside of Camarillo on July 10, blocking off a road outside the facility and clashing with protesters. Reports flooded social media in the morning of federal agents arriving at a Glass House Farms facility at 645 Laguna Road.

Following an immigration raid, protesters were in an hours-long standoff with U.S. Border Patrol agents at a farm in Camarillo.