Two teenage gunmen opened fire on Monday at the Islamic Center of San Diego, California, killing three men outside the mosque, one of them a security guard, before the two suspects were found dead, apparently from self-inflicted gunshot wounds, police said.

Police said people reported multiple shots at the Islamic Center of San Diego, about 9 miles north of downtown San Diego.

A shooter has opened fire at a San Diego mosque and police believe people have been shot, authorities say.

Reports of multiple shots fired at the center...

The attack is being investigated by police as a possible hate crime.