India, May 19 -- Authorities investigating the shooting outside the Islamic Center of San Diego have revealed new details showing that the suspect's mother had alerted police hours earlier that her son was suicidal and several weapons were missing from the family home.

San Diego Police Department Assistant Chief Scott Wahl confirmed that one of the suspects was enrolled at Madison High School, located roughly 1.1 miles north of the mosque.

"He was associated with the school as a student," Wahl said during a press briefing.

The two teenagers identified as Cain Clark, 17, and Caleb Vazquez, 18, killed three men at a mosque in San Diego before taking their own lives a few blocks away on Monday.

Wahl said that the mother of one of the sus...