People who knew the 16-year-old boy suspected of killing two students in a burst of gunfire at a high school outside Los Angeles described him as a quiet, smart kid who they'd never expect would violently snap.

The man suspected of killing a woman in a shooting at a Southern California synagogue pleaded not guilty to federal hate crime charges Tuesday.

The Borderline Bar & Grill in Southern California shooting left 13 dead, including the shooter.