A Walnutport man was killed in one-car crash Sunday morning.

Jack P. Grube, 23, of 4767 Maple Drive, was pronounced dead at Lehigh Valley Hospital, Cedar Crest, by the Lehigh County Coroner's office.The accident happed at about 6:25 a.m in front of 1306 Riverview Drive (Route 145), Lehigh Township.Police said Grube was the operator of a motor vehicle which struck a road barrier, rolled over, and then struck a sea crate.Grube was pronounced dead at the hospital at 11:17 a.m.Lehigh County Coroner Scott Grimm said Grube died from multiple traumatic injuries. He ruled the death an accident.The Lehigh County Coroner's office and the Lehigh Township Police Department are conducting the investigation.