GREEN BAY, Wis. (NewsNation Now) — A gunman killed two people at a Wisconsin casino restaurant and seriously wounded a third before he was killed by police late Saturday, in what authorities said appeared to be a targeted attack.

Dispatchers received reports of shots fired around 7:27 p.m Saturday inside the Oneida Casino, operated by the Oneida Nation on the western side of Green Bay.

Attorney General Josh Kaul tweeted shortly before 10 p.m. that the scene was “contained. There is no longer a threat to the community.”

Brown County Sheriff’s Lt. Kevin Pawlak said investigators believe the gunman was seeking a specific person he was angry at.

“He was targeting a specific victim who was not there, but he decided to still shoot some of the victim’s friends or co-workers, it appears,” Pawlak said.

Neither the gunman nor the shooting victims were immediately identified.

Pawlak wasn’t sure if the shooter was a former employee of the restaurant, but said “it appears there’s some relationship that had to do with employment.”

“Whether or not they all worked there, we’re still working on,” he said.

The wounded person was being treated at a Milwaukee hospital, Pawlak said.

A witness told NewsNation affiliate WFRV in Green Bay they were evacuated and heard gunshots shortly after.

Gov. Tony Evers issued a statement late Saturday saying he was “devastated” to hear about the shooting.

“Our hearts, thoughts, and support go out to the Oneida Nation, the Ashwaubenon and Green Bay communities, and all those affected by this tragedy.”

“As our neighbors reel from senseless violence here in northeast Wisconsin tonight, my heart goes out to our community,” said Rep. Jim Steineke. “I have reached out to Chairman Hill and offered my assistance to help support the Oneida Nation during this difficult time. I am incredibly thankful for the swift action of our law enforcement, who were able to apprehend the shooter quickly. My prayers are with the impacted families as we await more information.”

The Oneida tribe’s reservation lies on the west side of the Green Bay area.

Wisconsin Department of Criminal Investigation is investigating the incident.

The Associated Press and NewsNation affiliate WFRV contributed to this report.