The victim, Malcolm D. Cornell, was found around 10:49 a.m. on September 6 at a residence in the 300-block of West 93rd Street in Princeton Park, police said.
He had a gunshot wound to the body and was pronounced dead at the scene,
Police said Desmond Anderson, 35, was arrested Tuesday in the 10400-block of South Maryland Avenue.
Anderson has been charged with first degree murder and possession of a machine gun.
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