By CBS 2 Chicago Staff

CHICAGO (CBS) — Chicago Police were in mourning Saturday night after an officer was found dead.

Police tweeted a picture of squad cars behind an ambulance that carried the officer’s remains.

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He was discovered during a wellbeing check while off-duty Saturday morning.

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The officer was identified Sunday as Reggie Brown. He worked in the South Chicago (4th) District.

Sources said it appears he died of natural causes.

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CBS 2 Chicago Staff