We know something is coming at Sunday's VMAs...
...and now we have a better idea of exactly what that might be!
The trainwreck that is Unfitney keeps on spiraling out of control!
The cops were called to Britney Spears house at The Summit in Beverly Hills on Thursday over a family custodial dispute, PerezHilton.com has learned exclusively.
We're hearing that police were called after Unfitney kept her kids after the court-appointed time that she was supposed to give them back.
"She refused to give the children to Kevin's bodyguard," a source tells us.
Police were at Spear's house in the gated community of The Summit for over three hours.
K-Fed's attorney, Mark Vincent Kaplan, was even spotted entering the enclave!
Anne Kiley, one of Britney's attorney's, was also there, we're told - as were court officials.
The paparazzi were going insane outside The Summit, we're told. And news helicopters were hovering above!!!!
As police were with Britney, another cop car kept guard at the gate, we've learned.
Our sources tell us that police are making paparazzi park a quarter mile away and are making them walk to The Summit.
As of 10:00 PM Pacific, the cops are still at Brit Brit's.
"Every car that is pulling out of the summit is being flooded with papparazzi flashbulbs because they think it might be Brit," an on-the-scene source tells us.
The court is not gonna take Thursday night's drama lightly!
"This is the last straw," a source close to Federline tells us.
Update: Police are saying on the record that the incident at Britney's house is a "family custodial dispute that we are trying to resolve … peacefully by court order."
Update: The cops threatened to arrest Spears if she did not hand over custody of the kids.
[Image via Celebrity Babylon.]