A 19-year-old man has been arrested in the death of a 7-year-old boy who was struck by a stray bullet while washing his hands in the bathroom of his family’s westside Chicago home.

Joseph Serrano of Chicago was charged Thursday with first-degree murder, according to police.

Akeem Briscoe was apparently getting ready for bed on Oct. 26 when someone fired multiple shots in a nearby alley and a bullet struck the child in the abdomen, according to police.

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He later died at a hospital.

A Chicago teen was charged in the death of a 7-year-old boy after the boy was struck by a stray bullet in his home.

Shell casings were found in the alley and detectives examined private video footage from the area in the hopes of identifying who fired the shots.

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Investigators later learned that shots were fired from one group of people at another group in a car in the alley, police said.

“They shoot at that group; obviously the bullet misses that group,” Chicago Police Chief of Detectives Brendan Deenihan said. “There was nobody struck in that group, and the bullet goes through the window, striking the 7-year-old.”

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A 16-year-old boy also was charged Tuesday with first-degree murder. The Cook County State’s Attorney’s office said a third suspect was arrested, but not yet charged.