A 73-year-old man died after he crashed into a gravel pile while riding an e-bike in Pickering, Durham Regional Police said.The collision occurred just after 3 p.m. on Monday in the area of Woodview Avenue, south of Finch Avenue. Police say the 73-year-old man was travelling southbound on Woodview Avenue when he struck a gravel pile and was ejected from the e-bike. He was rushed to a local hospital with life-threatening injuries and was later pronounced dead.The collision is under investigation. The man was not identified.