A suspected gunman was killed and his brother shot and injured after he fatally shot two police officers and wounded a third as a result of domestic violence call in Connecticut, authorities said Thursday.

The officers were shot in Bristol, and the wounded officer was reported to have “serious injuries.”

Sgt. Christine Jelteman of the state police said the officers from the Bristol Police Department responded to domestic violence call involving two siblings at around 10:30 p.m. Wednesday and were met by a man outside the home. “Shots were fired, fatally wounding one officer on scene,” Jeltema said at a news conference Thursday.

Two additional officers were hit by gunfire, Jeltema said. One died at a hospital and the other was seriously wounded, police said.

The suspected gunman was also fatally shot, and the gunman’s brother was shot and wounded, Jeltema said.

Bristol Police Chief Brian Gould said the slain officers were Sgt. Dustin Demonte, 35, and Officer Alex Hamzy, 34. Gould said Officer Alex Iarato, 26, underwent surgery and was recovering.

A neighbor told Hearst Connecticut Media that the gunfire woke her up at about 10:45 p.m. Wednesday.

“It was horrible,” said Robyn Lauzon, who lives around the corner from the shooting site. “I heard three rounds of 9 or 10 gunshots each.”

Lauzon added, “It was scary as hell. And the sirens were crazy. It was like a war zone.”

The Associated Press contributed to this report.