Chris Brown Ain't No Snitch

Chris Brown has gone radio silent when it comes to helping cops track down the thugs who busted into his house and robbed him over the summer.

Law enforcement sources told TMZ the investigation into the July robbery at Chris' house has stalled out ... mostly because the singer is dragging his feet on answering questions the LAPD detectives need answered to go forward.

You'll recall ... 4 people stormed the house, held his aunt captive at gunpoint and then made off with cash and other items. Brown still hasn't provided any details about what was taken. Multiple sources connected to Brown and the investigation tell TMZ the perps were tight with Brown.

The best lead cops still have are fingerprints off an item the suspects dropped while fleeing, but they haven't found a match yet.

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