CHICAGO (CBS) — Two men and a 5-month-old baby were injured by gunfire in Chicago’s South Shore neighborhood Friday afternoon, Chicago police confirm.

They were on the sidewalk in the 1900 block of East 71st Street around 5:18 p.m. when they were struck by “unknown gunfire,” police said.

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The baby was grazed on the leg and transported to Comer Children’s Hospital in good condition.

A 28-year-old man was struck once in the knee and once in the chest. He was taken to the University of Chicago Hospital in serious condition, police confirmed.

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Another man, about 65, was struck once in the foot and taken to the University of Chicago Hospital in good condition.

No one is in custody.

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Area Central detectives are investigating.