(WTTW News)

A 16-year-old boy was among four people who were shot and killed over the weekend in Chicago.

According to the Chicago Police Department, 18 people were shot in 14 separate incidents between Friday at 6 p.m. and Sunday at 11:59 p.m.

The victims included two teen boys, ages 16 and 17, who were shot Saturday afternoon in the 2300 block of South Sawyer Avenue. The pair were sitting in a vehicle conducting a drug deal, according to police, when two unknown suspects began shooting. The 16-year-old was struck in the head and later died. The other boy was shot in the neck and hospitalized in critical condition.

No one is currently in custody.

On Saturday evening, a man in his 20s was found dead inside a retail store in the 11600 block of South Halsted Street. Police said the man was found unresponsive at around 6 p.m. and had been shot in the chest. He was pronounced dead on scene.

A 23-year-old man was killed early Sunday in a shooting in the 6400 block of South St. Louis Avenue. Police responding to the scene at around 1 a.m. found the man, who had been shot in the back of the head.

Less than an hour later, a 36-year-old man was shot in the 4500 block of West Grenshaw Street. Officers found the man, who had been shot in the left side of his chest. He was taken to the Mount Sinai Medical Center, where he later died.

Contact Matt Masterson: @ByMattMasterson | [email protected] | (773) 509-5431