Why does this not surprise us?!

Chris Brown is under investigation after a woman claimed he threatened her with a gun at a house party on Tuesday morning in LA. The rapper, along with Ray J and a couple other pals, were chilling at their crib getting tattoos when some "uninvited" guests showed up, including the woman making the claims.

The unidentified woman alleges CB pointed a weapon at her, while other sources claim Breezy was asleep the whole time this was going down.

Something must have gone down, because Ray J attempted to leave the scene as things were imploding and was stopped by cops at the end of the driveway. He was handcuffed and searched and eventually let go.

As for the volatile R&B star, he is currently holed up in the residence refusing to answer the door for authorities. Now, the LAPD is in the process of obtaining a search warrant to see if they can find a gun that matches the woman's description.

UPDATE:
9:20AM - He just posted a bizarre rant on Instagram proclaiming his innocence.

10:30AM - The troubled star reportedly just threw a duffle bag with guns and drugs out the window and was taunting the police!

11:10AM - Cops are still stationed outside his home waiting for him to surrender.

12:30PM - Chris is about to get arrested.