Three people have been killed in a shooting at a mosque in San Diego, California, which officials believe was perpetrated by two teenage attackers. The attack took place on Monday morning as officers were investigating a call about a possibly suicidal teen who had run away from home. Police were alerted to the shooting at the Islamic Center of San Diego and found three victims who had been shot in front of the building. Shortly afterwards, they received another call that shots had been fired nearby from a vehicle at a landscaper. Officers found the suspects - aged 17 and 18 - dead of self-inflicted wounds in a vehicle not far from the mosque. Among the deceased victims was a security guard who worked at the centre and heroically prevented more casualties. The FBI is investigating the incident as a hate crime due to writings found by the suspects' mother. San Diego Police Chief Scott Wahl stated that no officers were involved in firing their weapons during the incident. The situation escalated quickly as officers responded to a potentially active shooter scenario, following standard protocols. Investigators are still trying to determine the motive of the attack, which is presumed to be a hate crime due to the prominence of the mosque and the nature of the attack. Witnesses reported hearing up to 30 gunshots, and local schools were put on lockdown as a precaution. California's Governor Gavin Newsom expressed horror at the attack, stating that the state will not tolerate acts of terror against communities of faith.}