Authorities say 80-year-old Dominic Ciurelo of Somerville was attempting a U-turn on a narrow road along the waterway when his car went in the water and landed upside down around 10:40 a.m. Monday.
A passer-by saw the vehicle go over the riverbank and notified police.
Divers from the Somerset County Prosecutor's Office responded and pulled Ciurelo from the vehicle, which was submerged in about 5 to 6 feet of water. He was taken to Somerset Medical Center, where he was listed in critical condition Monday afternoon.
The accident remains under investigation.
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