UPDATED: 5/17/12 8:25 p.m.

BEAVER COUNTY, Pennsylvania- An East Palestine man is dead following a lawn mower accident.

Forty-seven-year-old Thomas Weisenberger passed away in the hospital.

Police said he was mowing a yard on Georgetown Road in Beaver County Tuesday when he may have strayed onto the street.

Weisenberger was struck by a car driving on the wrong side of the road.

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BEAVER COUNTY, Pennsylvania - An East Palestine man was in critical condition Tuesday night after a car hit the lawn mower he was riding in Beaver County earlier in the day.

The crash happened around 11:30 a.m. on Georgetown Road in South Beaver Township.

Police said 47-year-old Thomas Weisenberger was cutting grass, at what is believed to be a grandparent's yard, when he may have gone onto the road and was then hit by a car traveling on the wrong side of the road.

South Beaver Township Police Chief Dan McLean said, "We're just investigating the accident right now. We speculate that the gentleman driving the tractor may have spun around on the road while he was cutting grass but we're early in the investigation."

Weisenberger was flown to UPMC Presbyterian Hospital where he was listed in critical condition Tuesday.

Police said the 18-year-old driver of the car was not injured.

No citations or charges have been issued at this time.