PHILADELPHIA (CBS) — Police are investigating a shooting at a playground in Northeast Philadelphia that left one man critically injured.

It happened around 8 p.m. Sunday at a playground along the 9500 block of Frankford Avenue in the city’s Torresdale section.

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Officers responding to a call for a shooting arrived to find an 18-year-old man suffering from a gunshot wound to the chest.

Witnesses tell police the victim was at the playground with several of his friends when a man approached, announced a robbery and then pulled a gun. A struggle ensued and the victim was shot once in the chest.

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He was taken to Aria Torresdale Hospital in critical condition.

The shooter fled on foot. It was unclear how much, if any, money was stolen.

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