Grey’s Anatomy cast members T.R Knight, Kate Walsh, and Sarah Ramirez were told to leave the V.I.P area where they were catching the Black Eyed Peas performance at Justin Timberlake’s/Verizon’s Pre-Grammy Awards Party on Friday at L.A’s Club Avalon by a member of Diddy’s security staff, says a celebrity spy.

“Puffy was supposed to sit in the same VIP area that had four tables - two were for him and two were for the ‘Grey’s Anatomy’ cast. But he was very, very late, and there are a lot of ‘Grey’s’ castmembers, so T.R., Kate and Sara were at a table set up for Puffy,” the snitch dishes.

“This guy goes up to T.R., Kate and Sara and started demanding - ‘Get out! Get out now! Move it!’ - T.R. was furious,” the spy goes on.

T.R and Diddy reportedly exchanged some nasty words before the Grey’s cast members were hustled out of V.I.P.

“Listen, if they were moved, it wasn’t because Puffy told [his bodyguard to move them]. He wasn’t aware of what was going on - he had a great time and didn’t realize anyone was upset,” says a friend of the Bad Boy.

Diddy’s P.R denies the event occured all together:

“I was there, I saw it, some words were said. I don’t think Puffy knew who T.R. was.”