Investigators are searching for whoever killed an 18-year-old and wounded three other people shortly after a high school graduation ceremony in California’s Bay Area.

Officers responded to calls reporting a shooting inside a public library. On one 911 call, screams and gunshots could be heard, police said.

Prosecutors said Bradley Scott Sayer, 18, posted a video before the attack and had followed online forums about mass shootings.

A shooting at an area where fans gather to watch soccer games left one dead and another with “life-threatening” injuries.

Add Yahoo as a preferred source to see more of our stories on Google. The identity of one of two people killed in a California library shooting has been revealed — as the local DA heaped praise on ...

A shooting inside a Northern California library on Monday left two people dead and a suspect in custody, authorities said, as investigators worked to determine what led to the violence that ...

The inadvertent shooting was caught on dashcam, and the wounded officer has recovered, the Pasadena police chief said.