Britney Spears is taken to Cedars Sinai Medical Center for a mental evaluation

It was sheer craziness, that's how people describe/ the scene outside the studio city home of Britney Spears last night. The pop star was detained by police at 10:30 and taken /out of her home on a gurney. Witnesses say Britney was kicking and screaming while on the gurney, trying desperately to get away. But there was no escaping the dozens of photographers / outside, all trying to get a shot of the pop princess once again, throwing a tantrum.

Back off and clear the way!

The paramedics drove Britney to Cedar Sinai, where police were hoping to find out what if any substance she was under the influence of when officers first arrived at her home at 8 o'clock. The call went out to LAPD as a custody dispute. Problems / apparently arose when Spears refused to turn her sons over to ex-husband Kevin Federline's bodyguard. He was supposed to pick the children up at seven, but Spears reportedly refused to let them go. It wasn't until nearly 11, and after police reviewd court documents that the children were given back to Federline, but like Britney..

Their youngest son, two-year-old Jadon also left by ambulance and there is no word yet on what he may have been treated for, or whether he was injured in any way. Earlier in the day, Britney arrived 2 hours late for her child custody deposition, because she's defied court orders in the past, Spears's ex husband Federline has temporary custody of their sons. In this latest incident, this latest tantrum, may further hurt /the pop star's chances of winning custody ever again.