Britney Spears reportedly tried to hang herself with a bedsheet after running around Promises rehab facility screaming “I am the Antichrist” with the number 666 written on her forehead.

Previous reports had noted the arrival of paramedics - followed by Kevin Federline and Lynne Spears - at the clinic last Saturday night but now the News of the World is reporting that Britney tried to kill herself after her outburst.

A source told the newspaper: “She is still very vulnerable. Last Saturday she said she had the number 666 written onto her bald head. She was crying, and shouting, ‘I am the Antichrist!’”

“The clinic people just didn’t know what to do. Then she started screaming, ‘I’m a fake! I’m a fake!’ It must have been really frightening.”

“Later that night she tried to kill herself,” a friend told us. “She attached a sheet to a light and tied it around her neck. Paramedics were called, but luckily she was unhurt.”

The source added that her time in rehab has given Britney the time to reconsider her separation from Kevin and it’s convinced her to give their marriage another go: “Kevin has been a real tower of strength for her and she has finally decided to give their marriage another shot.”

“She thought things were over between her and Kevin after his wild partying and gambling. She felt he had deserted her and left her to bring up their two children on her own. She never even dreamed she would take him back.”

“But Kevin’s like a different man now. He’s never been so caring before, and is really worried about Britney. He’s been Britney’s rock during her difficult time, and she wants to give him another chance.”

“She has been talking to Kevin every night for hours on the phone, telling him she still loves him.”

“Britney seems much happier and has calmed down a lot. She’s a completely different Britney from the beginning of the week.”

“This week she even asked if she could have a night away from the Promises Clinic with Kevin. She’s still waiting to hear if they will give her a pass so that they can go out for a romantic meal together.”

The source also revealed that Britney has now seen what a good father Kevin can be after he stepped up to the plate to take care of their sons while she’s in rehab and she wants to have another child with him: “She just wants to be with him again, and thinks having another baby will seal their marriage.”