A Chicago gunman who opened fire on a group of Fourth of July partygoers was stopped by a veteran carrying a concealed weapon, police said.

The unidentified military member and three others were leaving a party Friday night in the city’s South Side when one of the victims noticed a cup of liquor on top of her vehicle, prosecutors said Sunday, The Chicago Tribune reported.

When she removed the drink, 22-year-old Denzel A. Mickiel approached her from a party next door and threatened her and her friends. After leaving briefly, Mickiel allegedly returned with a gun and began firing at the group, injuring a 22-year-old woman.

The military member retrieved his gun and fired two shots, striking Mickiel twice. The four victims escaped as two other unidentified people continued to shoot at them, The Tribune reported.

The female victim was in stable condition after suffering wounds to the arm and back.

Mickiel, who faces an attempted murder charge, was transported to Advocate Christ in critical condition, police said.

He was ordered held on $950,000 bail, The Tribune reported.

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