The shooting was reported in the area of Warwickshire Lane and Allen Road in Glen Burnie around 4 a.m, Anne Arundel County, police said.
The man's identity has yet to be released and police are unsure if he is a juvenile or adult. No other information was released.
The investigation is ongoing. Anyone with information is asked to call police at 410-222-4731 or their TipLine at 410-222-4700.
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