IRWINDALE, Calif. - A gunman stormed into an office of the Southern California Edison utility Friday and shot a man and woman before killing himself, police said.

The building was quickly locked down and dozens of people were seen streaming out with their hands raised. Two nearby schools also were locked down but no one on the campuses was hurt.

"One male gunman shot one female, one male and then apparently took his own life," Police Chief Dennis Smith told reporters.

The conditions of the two people he wounded were not immediately known. There was also no immediate word on what prompted the gunfire.