Los Angeles police say a lone gunman opened fire in a Middle Eastern restaurant in the North Hollywood area Saturday afternoon, killing four people and wounding at least one other person.

Authorities say the suspect in the shootings is a white male, approximately 30 years old, and possibly Armenian.  He is still at large.

Police have not yet determined a motive.

Law enforcement sources told The Los Angeles Times newspaper the shooting might have involved Armenian gangs.

Some information for this report was provided by AP, AFP and Reuters.