FELTON, DE (CBS) — Authorities say a Chester County man was killed overnight when he was struck by an off-duty police officer while stopped along the road in Delaware.

It happened shortly before 2 a.m. Saturday along Route 12 in Felton.

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Delaware officials say 32-year-old Christopher Thompson, of Coatesville, Pennsylvania, was headed eastbound on Route 12 in a Dodge pickup truck pulling a trailer–but pulled over on the side of the road for a mechanical issue with the trailer.

According to investigators, Thompson had pulled onto the right shoulder of the roadway but a portion of the trailer remained in the traffic lane.

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Officials say Thompson was working on the driver’s side of the trailer when he was struck by a fully marked Chevrolet Tahoe driven by a 47-year-old off-duty Harrington Police officer, who was not immediately identified.

The victim was pronounced dead at the scene.

According to investigators, Thompson was dressed in all dark clothing at the time of the crash.

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The off-duty officer and his female passenger were not injured. Officials say alcohol, drug use and excessive speed were not being considered factors in the accident.