CHICAGO (CBS) — Six people have been killed, four of them in a single shooting, and 14 others wounded in separate attacks across Chicago since Friday evening, marking a violent start to the weekend and inching the city closer to 500 homicides this year.

The victims in the quadruple homicide were among 460 people shot to death this year in Chicago, according to data maintained by the Chicago Sun-Times. In all, 495 deaths in the city have been ruled homicides since the start of the year.

The deadly attack happened about 8:35 p.m. Friday in the Brighton Park neighborhood on the Southwest Side, according to Chicago Police. A pregnant woman was among four people shot to death in the latest bloodshed stemming from an ongoing gang war in the Southwest Side neighborhood, officials said. The woman and three men were found in a car by officers responding to a call of shots fired about 8:35 p.m. in the 4700 block of South Fairfield.

One of the victims was 28-year-old Ida Arvizu. Ald. Ray Lopez (15th) said Arvizu’s mother confirmed to authorities that her daughter was pregnant when she was killed. The Cook County medical examiner’s office identified the slain men as Michelle A. Cano, 21; Joel Sandoval, 24; and Miguel Sandoval, 27. They all suffered multiple gunshot wounds and their deaths were ruled homicides.

The most recent homicide happened Saturday evening when a man was slain in a Far South Side Jeffery Manor neighborhood shooting. The 33-year-old was arguing with someone at 8:47 p.m. in a driveway the 9700 block of South Merrion when the other person took out a gun and shot him multiple times in the head, police said. He was pronounced dead at the scene. His name has not been released.

Another man was killed at 10:11 a.m. Saturday in the Gage Park neighborhood on the Southwest Side. The 21-year-old was walking to his vehicle in the 2500 block of West 58th when a male approached and fired shots, police said. He suffered two gunshot wounds to each shoulder, and was taken to Mount Sinai Hospital, where he was pronounced dead. The medical examiner’s office has not identified him.

The most recent nonfatal shooting happened at 9:30 p.m. Saturday when a 31-year-old man was shot in the Far South Side Fernwood neighborhood. He was standing on the sidewalk when he heard shots in the 10400 block of South Perry and realized he had been struck in the right foot, police said. He was taken to Roseland Community Hospital, where his condition was stabilized.

Several hours earlier, a man was critically wounded in a Northwest Side Galewood neighborhood shooting. The 26-year-old was outside about 5:50 p.m. when someone walked up to him in the 6100 block of West Bloomingdale and opened fire, police said. He was shot in the abdomen and taken to Loyola University Medical Center in Maywood in critical condition.

Less than 15 minutes earlier, a teenager was wounded in an Uptown neighborhood shooting on the North Side. The 17-year-old boy was walking at 5:37 p.m. in the 900 block of West Eastwood when he heard shots and realized he had been hit in the left leg, according to police. He was taken to Illinois Masonic Medical Center, where his condition was stabilized.

At least 11 other people have been wounded in shootings between 4:30 p.m. Friday and 9:30 p.m. Saturday.

(Source: Sun-Times Media Wire © Chicago Sun-Times 2017. All Rights Reserved. This material may not be published, broadcast, rewritten, or redistributed.)

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