A semitrailer truck driver struck and killed a pickup driver who was stopped on a western Minnesota interstate, authorities said Friday.

The crash occurred about 7:20 p.m. Thursday on eastbound Interstate 94 south of Dalton in Otter Tail County, the State Patrol said.

Authorities have yet to explain why the pickup truck, driven by 53-year-old Waldemar Eswein, of West Kelowna, British Columbia, was stopped in a lane of traffic.

The patrol said Eswein was not wearing his seat belt at the time of the wreck.

The semi's driver, 49-year-old Ephrem Ayalow Wendirad, of Toronto, was not hurt.