Mark DeBarge (from DeBarge) was arrested for drug possession this week in a Hollywood hotel ... TMZ has learned.
Law enforcement sources tell us, Mark was in his hotel room with some woman early Wednesday morning -- when the woman's parole officer stopped by for a routine check-up.
We're told the officer searched the room and discovered narcotics -- it's unclear exactly what.
Once the drugs were found, we're told Mark and his female companion were placed under arrest. Mark was booked for narcotics possession and has since been released.
Calls to Mark's camp were not returned.
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