16-year-old charged as adult in slayings of 5 Illinois family members and is alleged to have mutilated body

The suspect faces five counts of murder in the targeted mass shooting in East St. Louis. A 15-year-old girl has also been arrested as a suspect.

A 16-year-old boy accused of gunning down five members of the same family and mutilating one of the victims during an Illinois shooting spree is being charged as an adult, according to court documents obtained by NBC News.

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