Sept 12 (Reuters) - An unidentified gunman shot and killed his wife and four other people in a series of shootings on Wednesday in Southern California before taking his own life, police said.

The man went with his wife to a trucking company in Bakersfield, California, where he shot and killed a man and then turned his gun on his spouse, killing her, Kern County Sheriff Donny Youngblood told a news conference.

He then chased another man from the trucking company before he shot and killed him in front of a nearby sports store.