One person was killed and two others seriously injured in ATV accidents over the weekend.

State Police are continuing to investigate both accidents, one of which took place in Bombay and the other in Lawrence.

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Fatal crash

A Brasher Falls man died Friday night when his ATV collided with a tractor-trailer truck in the town of Lawrence, St. Lawrence County.

Roger J. Deshane, 46, of Brasher Falls was riding a 1997 Yamaha Wolverine ATV south on Hallahan Road about 8:30 p.m. when he failed to stop at a stop sign at the intersection with U.S. Route 11, State Police said in a news release.

At that time, Henry J. Hart Jr., 61, of Plattsburgh was driving east on Route 11 in a 2013 International Harvester truck with a loaded 53-foot trailer.

Deshane’s ATV struck the side of Hart’s trailer, State Police said, and Deshane was thrown off.

A third vehicle — a 2009 Honda Accord, driven by Nathan H. Magne, 25, of Montpelier, Vermont — was headed west on Route 11 “and inadvertently struck Deshane,” who was lying in the road, State Police said.

Deshane was wearing a helmet, State Police Troop B Public Information Officer Trooper Jennifer Fleishman said. But it was not enough to protect him. St. Lawrence County Coroner June Wood pronounced him dead at the accident site.

His body was taken to the Onondaga County Medical Examiner’s Office, where an autopsy was performed on Sunday by Dr. Jeremy Stuelpnagel. He determined the cause of death to be multiple blunt force injuries due to a motor-vehicle accident.

The manner of death was ruled to be accidental.

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Critical injuries

At 6:18 p.m. Sunday, State Police were called to an ATV crash on River Road in the town of Bombay.

Bradley J. Rickerl, 31, of Bombay had been driving a 2016 Can-Am Outlander ATV east on River Road with Kristina E. Bushey, 25, of Bombay along as a passenger.

Rickerl failed to negotiate a right turn, State Police said, and went off the road’s north shoulder, hitting a utility cable and then a utility pole.

Both Rickerl and Bushey were both thrown from the ATV.

They suffered leg injuries and were rushed to University of Vermont Health Network at Alice Hyde in Malone.

Rickerl suffered multiple compound fractures to his right leg and was transported by Life Flight to the University of Vermont Medical Center in Burlington, where he was listed in critical condition, State Police said.

Bushey was diagnosed with a fractured right leg and listed in stable condition at Alice Hyde.

Bushey was wearing a helmet, Fleishman said, but Rickerl wasn’t.