Explosion rocks tiny Californian city of Palm Springs

Investigators from the Bureau of Alcohol, Tobacco, Firearms and Explosives are on their way to the scene to help assess what happened, according to spokeswoman Nicole Lozano.

Nima Tabrizi, 37, of Santa Monica, said he was inside a cannabis dispensary nearby when he felt a massive explosion.

"The building just shook, and we go outside and there's massive cloud smoke," Tabrizi said.

"Crazy explosion. It felt like a bomb went off. ... We went up to the scene, and we saw human remains."

Palm Springs is a tiny community in the desert about a two-hour drive west of Los Angeles, known for upscale resorts and a history of celebrity residents.