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CHICAGO — At least four people were killed and more than 50 were shot — including seven minors — over Labor Day weekend.

The shootings happened between 6 p.m. Friday and 3 a.m. Monday.

The youngest victim is 4-year-old Mychal Moultry Jr., who was shot just after 9 p.m. Friday in the 6500 block of South Ellis Avenue. Police said the boy was struck in the head while getting a hair cut after bullets entered through a window from an unknown direction.

He was transported to Comer Children’s Hospital in critical condition and put on life support. The boy died Sunday.

A $9,000 reward is now being offered by a trio of community organizations for information leading to an arrest and conviction in the fatal shooting of Mychal.  

In one of the latest shootings, a 22-year-old man was shot in the face while standing in his backyard in the 9500 block of S. Yale around 11:40 p.m. Sunday. Police said the victim was outside when he heard a loud noise and felt pain.

He was transported to Christ Medical Hospital in serious condition.

On Saturday afternoon, a 11-year-old boy and a 14-year-old girl were shot during a back-to-school event in the 2900 block of West Fulton after someone fired into a crowd.

Also on Saturday night, a 15-year-old boy was shot in a drive-by shooting in Englewood and a 13-year-old boy was seriously injured in a shooting in South Chicago. The 13-year-old was shot in the head near a basement in the 8500 block of South Marquette Avenue.

On Sunday, a 14-year-old boy was injured in a drive-by in the 2500 block of South Trumbull. About an hour earlier, a 17-year-old was shot inside a vehicle in the 100 block of East 55th Street.

A CTA bus driver was also shot and seriously injured in the Loop Saturday night. The perpetrator was apprehended and taken into custody shortly after the incident occurred.