THERESA, N.Y.-- Two people, including a New York State Trooper, were shot and killed in Jefferson County Sunday night.

The New York State Police's website says at approximately 8:09 p.m. Trooper Davis responded to a shots fired call during a domestic dispute on County Route 46 in the town of Theresa, in Jefferson County.

While Trooper Davis was approaching the home, he was shot once and killed.

32-year-old Justin Walters also shot and killed a woman. Her identity has not yet been released.

Gov. Cuomo announced Monday that all flags on all state government buildings will be flown at half-staff beginning Wednesday, July 12 through interment, in honor Davis.

"The entire New York family grieves today for Trooper Joel Davis, who was shot and killed in the line of duty Sunday night in Theresa, Jefferson County," Cuomo said. "Trooper Davis served as a member of the New York State Police for four years, and his death is yet another sad reminder of the risks law enforcement officers face each day in order to protect our communities and serve the residents of this great state.

"I ask all New Yorkers to keep Trooper Davis' family, loved ones and colleagues in the state police in their prayers during this incredibly difficult time."

Walters surrendered to State Troopers without incident. Walters is an active duty Army infantryman who is currently stationed at Fort Drum.

Trooper Davis was 36 years old from Evans Mills, NY. He was originally assigned to Troop D, SP Watertown, before receiving his current assignment at SP Philadelphia.

The incident is under investigation. We will continue to give updates as we learn more.