Bac Tien Duong, 43, was taken into custody in Santa Ana on Friday morning.
Hutchens said Duong approached a citizen on the street just before noon and said he wanted to turn himself in.
CNN affiliate KCAL interviewed the owner of the auto shop where Duong gave himself up. Tri Nguyen told the station his wife called police after Duong came in and said he wanted to surrender. Nguyen and Duong have been friends for almost 10 years, the owner said.
Another man told reporters that Duong wanted to be at a place where he could be detained safely. How