LONDON, England (CNN) -- Grammy-award-winning singer Amy Winehouse has been released on bail after her arrest for alleged drug offenses, London's Metropolitan Police said Thursday.

Winehouse is well-known for her song "Rehab," which describes the singer's reluctance to enter a clinic.
Winehouse, 24, posted bail Wednesday night and is due in court in May, said a police spokesman, who declined to be named in line with policy.
The singer reported to police "by appointment" Wednesday afternoon and was arrested for alleged possession of a controlled drug, police said.
Winehouse is well-known for her song "Rehab," which describes the singer's reluctance to enter a clinic. She won five Grammy awards this year -- three for "Rehab" as well as Album of the Year and Best New Artist.
Winehouse has battled drug addiction and spent about two weeks in a rehabilitation clinic in January.
Her stay there followed the leak of a home video that showed her smoking something in a glass pipe minutes after she was heard saying she had just taken six tablets of the anti-anxiety drug Valium.
The Sun, Britain's top daily tabloid, made the 19-minute video public. It said the video was shot in Winehouse's East London home.
The Metropolitan Police investigated after receiving a copy of the video from The Sun.
Winehouse entered rehab last year. In October, she and her husband, Blake Fielder-Civil, were arrested at a Norwegian hotel for marijuana possession.
Wednesday's arrest was the second time in a week Winehouse has been questioned by police. Police brought her in Friday and issued her with a caution for assault after Winehouse admitted slapping a man in a Camden bar in north London.
"Rehab," a song which describes the singer's reluctance to enter a clinic, earned Winehouse three Grammy awards this year. She won two other Grammys for Album of the Year and Best New Artist.
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