HOOSICK, N.Y. -- Authorities say a 44-year-old man is hospitalized after shooting himself at the end of an eight-hour standoff at an upstate New York home.

On Monday the New York State Police, with the assistance of the Village of Hoosick Falls Police Department, the Rennselaer County Sheriff's Department, and New York Environmental Conservation Police, responded to a domestic dispute on State Route 22 in the Town of Hoosick.

According to police reports, Keith F. Gates, 44, of Hoosick, fired several rounds from a long gun out of the rear of the residence around 10 a.m. Monday.

Upon law enforcement's arrival, Gates made threats toward himself and responding officers then refused to exit the home. State Police crisis negotiators communicated with Gates for several hours. Entry to the residence was ultimately made with the use of robotic surveillance equipment, which located Gates in an upstairs bedroom with an apparent self-inflicted gunshot wound to the head. The State Police Special Operations Response Team immediately secured the residence and initiated life saving measures, according to police.

Police said Gates was transported to Albany Medical Center by Cambridge Valley rescue squad where he is listed in grave condition.

Troopers say police had been called to the home Sunday night for domestic disturbance.

Material from the Associated Press was used in this report.