OAK CREEK, Wis. (AP) – A gunman killed his girlfriend and another man and wounded two others in a hotel early Friday, at one point spraying the hallways with bullets, police said.

The 34-year-old man, who was holding a hostage when officers arrived, surrendered after about 30 minutes of negotiations, Police Chief Thomas Bauer said. He did not release the man’s name.

Bauer said officers were called about 2:30 a.m. to the Comfort Suites, where a man indicated he had killed “some people.”

The man, who fired 30 to 40 rounds, was armed with an automatic weapon and a revolver and wearing a bulletproof vest, Bauer said. A man and a woman were hospitalized in stable condition.

Investigators believe the shooting started after the suspect and his 23-year-old girlfriend, Sandra Wisniewski of Milwaukee, got into a fight and she called relatives to come pick her up, Bauer said.

Anton Uebelhoer, 43, a German in town for a trade show, also was killed when he stepped into the hallway after Wisniewski was shot.

The suspect then started firing down two hallways, wounding one man, Bauer said. The woman left her room after hearing the noise but saw the shooter and ran back inside, only to be shot through the door, the chief said.

Another man taken hostage was released when the assailant turned himself in, Bauer said. The man, a member of the military, had returned to his Chicago-area home by Friday afternoon.

Robin Martin, 41, said he opened his door on the third floor to investigate a noise.

“Half a dozen guys in SWAT outfits, automatic weapons and sidearms were in the hall. It scared the hell out of me,” Martin said. “One of the men said, ‘Sir, shut the door.’ I did so immediately.”

Todd Winkler, vice president of operations for the hotel’s owners, did not say how many people were in the hotel at the time, although 90 of its 130 rooms were rented.

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