Authorities took a suspect into custody in West Hollywood, California, after discovering an arsenal in his car that included explosive powder, assault weapons and a camouflage outfit, CNN affiliate KABC reported, citing unnamed authorities.
The suspect told authorities that he was there for the Los Angeles Pride festival, which is underway this weekend.
“We’re assisting our local partners,” Los Angeles FBI spokeswoman Laura Eimiller told CNN. She would not provide additional details.
A police news conference is expected shortly.