Amy Winehouse's friends are said to have put the singer on suicide watch after she allegedly threatened to kill herself with a knife.

Winehouse is said to have made the claim after her husband, Blake Fielder-Civil, was refused an early release from prison.

Fielder-Civil is currently serving a 27-month sentence after pleading guilty to assault and perverting the course of justice.

A source told the Daily Star: “Amy said she was ‘caught up in a nightmare’. Her friends managed to get the knife away from her but are now holding a 24-hour watch on her.

“Amy has a death wish. Her emotions are exaggerated. She is either high as a kite or, when she hears something she doesn’t like, she’s suicidal.”

A spokesperson for the star has since told US publication People that the reports are not true, and that the singer is "fine".

(by Jason Gregory)