A Hudson Valley police officer died Thursday in the line of duty.

Sgt. Kerry Winters, 51, died during an Ulster County Sheriff’s Office In-Water Rescue Team dive training operation in the Ashokan Reservoir.

Ulster County Sheriff Paul J. VanBlarcum said the investigation into the death is ongoing and is in a preliminary stage.

Winters was a 30-year veteran of the Ulster County Sheriff’s Office Corrections Division.

“We are all devastated at the loss of Kerry Winters, Corrections Sergeant from the Ulster County Sheriff’s Department,” Ulster County Executive Michael P. Hein stated. “Our thoughts and prayers are with his family during this time of unspeakable grief. The entire Ulster County family mourns this profound loss of an individual dedicated to public safety and helping others.”

No other details were provided. Hudson Valley Post will continue to update this story when more information is released.

The Ulster County Sheriff’s Office was assisted at the scene by the Olive Fire Department, Olive First Aid, the Dutchess County Sheriff’s Office, the Greene County Sheriff’s Office and the New York City Police Department Environmental Conservation Police. Further, The Ulster County Sheriff’s Office was assisted by the Kingston Fire Department and Kingston Police.