The fall happened at Orthodox Presbyterian Church, located at 906 Church St., according to the Suffolk County Police Department.
Pastor Meint Ploegman was cleaning the gutters when he fell approximately 10 feet to the ground, police said. A church member found Ploegman at approximately 10:55 a.m. and called 911, police added.
Ploegman is 65 years old and lives across the street from the church at 911 Church St. Police said Ploegman was taken to South Shore University Hospital, which was most-recently known as Southside Hospital, in Bay Shore. He is listed in critical condition, according to police.
Fifth Squad detectives based in Patchogue are investigating the fall. Detectives ask anyone with information to call the Fifth Squad at 631-854-8552.