A former state trooper killed his estranged wife on Thursday with a shotgun in a central Pennsylvania supermarket before taking his own life, according to state police and local media.

The incident occurred two days after she filed for divorce and two months after he was accused of assaulting her.

Department spokeswoman Maria Finn said Mark R. Miscavish, who retired from the state police in 2011 after 15 years, went to the County Market, where his wife, Traci worked, found her in an upstairs office and shot her then killed himself at about 10 a.m.

Police were called to a County Market store in Philipsburg Thursday morning to find two bodies. The weapon was recovered but declined to say how many times it was fired.

Mark Miscavish was arrested on January 23 after allegedly assaulting his wife, when Traci returned home to retrieve some belongings, Centre County District Attorney Stacy Parks Miller said.

Miller said Traci lived in fear of her estranged husband telling prosecutors at that time of believing he would harm her.

"She said, 'The next time I see him is going to be at the end of a gun,'" Parks Miller told The Associated Press. "We were very concerned when he got out and we're just devastated now."

"He wasn't in his right mind," Traci's sister Gina March said. "I don't believe he's at fault, I believe he needed help. ... And nobody was there to help him, not the judge, not the cops, not our system."