Three people were killed and 16 others were wounded during the first six hours of the year as the city ended a year that brought levels of violence that had not been seen in the city since the 1990s.

In total, four people were killed and 25 other people were wounded in separate shootings from New Year's Eve to early Sunday.

Around 2:30 a.m. an unnamed man was shot by a Chicago police officer, authorities said at a news conference Sunday, about 12 hours after the shooting. They reported that a man led cops on a car chase and physically resisted once he was finally stopped. The man, who is in critical condition, was shot after a scuffle, police said.

About two hours later, two men were killed in the year's first fatal shooting, which took place at 4:25 a.m. Sunday in the 4600 block of North Broadway in the city's Uptown neighborhood on the North Side.

A 38-year-old man was shot in the chest and the right leg. He was identified as Maurice Delaney, 38, of the 9000 block of Skokie Boulevard in Skokie, according to the Cook County medical examiner's office.

A second man, who police believed to be 35 to 40 years old, was shot multiple times on his right side. He was later identified as Ali Mohamed, of the 7000 block of North Kenton Avenue in Skokie.

Both men were taken to Illinois Masonic Medical Center, where they were later pronounced dead at 5:19 a.m.

They were shooting at each other inside a business on that block, police said.

On the West Side just before 5:55 a.m., a 39-year-old man was shot to death in the West Garfield Park neighborhood. He was identified as John Warship, of the 4400 block of West Wilcox Street, according to the Cook County medical examiner's office.

Officers found Warship on the sidewalk in the 4600 block of West Monroe Street after responding to a call of shots fired. He had been shot multiple times and was pronounced dead at the scene at 6:10 a.m.

Officers guarded his body, which was covered by a white sheet. Warship was killed in front of two brick multiunit buildings. Police placed multiple evidence markers near the body.

A woman delivered newspapers to the quiet neighborhood, and a resident inside a home that was part of the crime scene played religious music as the sun began to rise.

The last homicide of 2016 happened about 12:30 p.m. Saturday while a man was driving in the 4800 block of West Chicago Avenue in the South Austin neighborhood. The man was reportedly sideswiped by a Mercedes-Benz. The driver of the Mercedes got out of the vehicle and an argument started, police said.

The man was later identified as Kenneth Weaver, 22, according to the Cook County medical examiner's office. He died from a gunshot wound to the torso, the office determined following an autopsy Sunday.

At some point, the Mercedes driver pulled out a gun and shot the man in the left side. He was taken in critical condition to Stroger Hospital, where he was pronounced dead, police said.

At a brief news conference late Saturday afternoon at the North Side's Town Hall police district, 850 W. Addison St., police Superintendent Eddie Johnson said the city added about 1,000 more police officers on the streets, including undercover police, for New Year’s Eve.

There were gang teams in neighborhoods as well as officers around Chi-Town Rising and Navy Pier celebrations.

“Basically the message we want to send Chicago is that we’ve prepared,” Johnson said. “We want everybody to celebrate but we want everybody to celebrate responsibly.”

Other shootings: