Mindless Behavior Singer Royal Roc Wanted For A Stolen BMW

If you see boy band singer Roc Royal tooling around L.A. in a brand new Beemer ... the LAPD would like to know about it.

Cops want to talk to the singer from the group Mindless Behavior ... because they think he may be rolling in a stolen whip.

Sources involved in the investigation tells TMZ ... record producer Chris Clark's BMW 325i went missing Monday, after a Hollywood studio session with Royal. We're told Clark had left the car keys on a table in the studio ... and when he went to leave, the keys -- and Roc -- were gone.

Clark contacted RR and threatened to go to cops if the car wasn't returned the car STAT ... but Royal refused so Clark reported the vehicle stolen.

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