Milwaukee ? Milwaukee Mayor Tom Barrett remained hospitalized Sunday after a man attacked him with a metal pipe as the mayor tried to assist a grandmother screaming for help near the Wisconsin State Fair.

Barrett, 55, was in stable condition at a local hospital with a fractured hand and other head and hand wounds, officials said.

The mayor had gone to the fair outside Milwaukee on Saturday night with his sister, two daughters and a niece. As the group left and walked to Barrett’s car, they heard a woman screaming for someone to call 911, police said.

Police said the woman was a grandmother who was trying to protect her 1-year-old granddaughter from a 20-year-old man, an assault authorities characterized as a domestic dispute.

The suspect hit Barrett in the head and torso with a metal pipe. Barrett apparently fought back, fracturing his hand when he punched the suspect.

The suspect then fled the area when he heard sirens. He was arrested on Sunday at a Milwaukee home, and police recovered the alleged weapon. The woman and baby were uninjured.

The mayor, who did not ask for security to accompany him to the fair because he wasn’t on official duty, underwent successful surgery Sunday on his fractured right hand and also had cuts on his head and lip stitched up, Curley said. The mayor likely will remain in the hospital through today, he said.