Secrets of the Deep Sea | Ancient Aliens

Underground Aliens Emerge Across the Globe (S2, E4) | Ancient Aliens | Full Episode

Extraterrestrial Secrets of Mankind's Past | Ancient Aliens

A law enforcement source and police dispatch identified Cain Clark as a suspect in a shooting at the Islamic Center of San Diego, an attack authorities are investigating as a hate crime. People who knew the 17-year-old told CNN they were in shock. Another 18-year-old suspect has yet to be identified. Three people were killed, and the two suspects were later found dead.