A young US sheriff’s deputy who opened fire on a pizza party and killed six people reportedly flew into a rage when he was rebuffed by his former girlfriend.

THE off-duty sheriff’s deputy who killed six young people and critically wounded another during a homecoming weekend gathering may have acted following a romantic dispute.

An off-duty sheriff’s deputy went on a shooting rampage at a home where seven young people had gathered for pizza and movies, killing six and critically injuring the other before authorities shot him dead.