(CHICAGO) A 54-year-old man from the western suburbs has died after being shot in the head Saturday night near Millennium Park and the Art Institute of Chicago downtown.

Peter Fabbri was pronounced dead at 5:53 p.m. Sunday at Northwestern Memorial Hospital, according to the Cook County medical examiner’s office. He lived in the 2100 block of South Oak Park Avenue in Berwyn.

He had been walking with two people around 7:35 p.m. Saturday along Michigan Avenue when he got into an argument with another man at the northeast corner of Michigan Avenue and Monroe Street, according to Chicago Police. They started fighting, and the other person pulled a gun and shot him in the head, police said.

The shooter took off on a bicycle but was arrested nearby, according to police, who said detectives were still questioning a “person of interest” Sunday night.

“I feel unsafe now,” said Twion Stevens, 26, who was out for a walk near the park when he heard the commotion and came upon the crime scene. “It makes me worry about my daughter — she’s 4 years old and means the world to me. This is Millennium Park. Kids play here, people come here to enjoy themselves. This is sad.”

Stevens, a minister, said he moved away from the South Side to get away from violence.

“Chicago needs to do better than what’s going on right now,” he said.