(AGI) Los Angeles, July 13 - Three people were killed and twoinjured in a shooting in a working class district in Pasadena,California. The murderer had a business relationship with thevictims, said investigators after a first reconstruction of theevents. One of the victims is a neighbour who rushed to thehouse of the shooting to assist the wounded. The gunmanbarricaded himself in his house immediately after the murders,then surrendered to the police after a long negotiation. . .