Britney Spears was sedated in the psychiatric unit at Cedars-Sinai Medical Center, Page Six reports. The singer requested that no visitors be admitted and her doctors agreed.

In the meantime, page six reports that after Britney refused to give the kids to Kevin Federline’s bodyguard, her ex-husband went to her house to retrieve them himself.

“When Kevin got to the house and saw how messed up Britney was and how distraught the boys were, he tried to get her to release them,” the source tells PageSix.com.

The mother of two responded by locking herself in the bathroom with son Jayden “in an effort to hide from Kevin and then the police.”

“Kevin tried to talk to Britney at the hospital last night and she freaked out,” says the insider. “He wanted to try and get to the bottom of what she did, but she was not cooperative.”

Along with Britney’s family, Kevin is also said to want a judge to order the singer into rehab.

“Britney is in a horrible state of mind,” says the source. “Suicidal is an accurate description. She has made threats, in the past, and recently in words such as ‘I should just drop off the face of the planet’ and ‘If I were dead…’”