Police have arrested a man on suspicion of shooting two people to death and badly wounding a third on Valentine's Day at a San Francisco lookout.

KNTV reports Monday that a San Pablo man was arrested in Richmond. His name wasn't immediately released.

He's suspected of killing two men shortly after 2 a.m. Sunday at the Twin Peaks lookout, a popular tourist spot with a sweeping view of the Bay Area.

Police say the gunman apparently knew and targeted 21-year-old Julio Peraza and 19-year-old Rene Mora, both of Santa Rosa.

An 18-year-old man who was shot and remains hospitalized with life-threatening injuries.

Authorities say the attacker fled in a carjacked GMC Yukon Denali that was recovered Monday.