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Three people are dead, including the gunman, after he stormed an Illinois bar and shot a woman and another man during a high school reunion in East Peoria.

The shooting happened around 7:50 p.m. at the Fifth Quarter Sports Bar and Pizzeria on Saturday. The shooter was fatally shot by an off-duty police officer, according to authorities.

Lori A. Moore, 33, of Morton, Ill. and Lance E. Griffel, 36, of Peoria, were pronounced dead just minutes apart at St. Francis Hospital with gunshot wounds to the head. Police say the East Peoria High School Class of 1999 shooting is believed to have been domestic violence. The shooting suspect was identified as the ex-husband of Moore, WEEK reported.

According to court records, Moore filed for divorce from Jason A. Moore in March of 2013. It was finalized in May of 2013.

Police have not officially released the names of the gunman or the off-duty officer involved by late Sunday. An investigation continues.