A number of people have been killed and several injured in a shooting at a university in California, police say.
US TV footage showed wounded people emerging from buildings at Oikos University in the city of Oakland.
Police and armed response teams have surrounded the buildings, with reports suggesting the gunman has not yet been captured or contained.
Oikos University is a private religious institution offering courses in theology, music and nursing.
A nearby hospital has confirmed to US media that it is treating four victims in the wake of the shooting.
Johanna Watson, of Oakland Police, said: "We do have fatalities, I cannot confirm the number of fatalities we have at this time. We additionally have victims who have suffered from gunshot wounds."
The Oakland Fire Department says it was first notified of the shooting at about 10:50 local time (18:50 GMT).
A police officer at the scene told reporters the gunman and has not been identified.
Re: US University Shootings :: Oakland, California
Concealed carry laws would be the answer! Some psycho whips out a gun and starts taking people out, and 25 civilians draw down on him and blow him into 57 assorted pieces. Cool.