LONDON - Troubled singer Amy Winehouse was granted bail by police Wednesday after she was arrested in connection with a January video which allegedly shows her taking drugs at a party at her north London home.

London's Metropolitan Police said the Grammy winner had been released on bail following several hours of questioning at a police station in the city.

Winehouse's spokesman, Chris Goodman, confirmed that his client had been arrested Wednesday and held in police custody to answer police questions.

"Amy Winehouse voluntarily attended a London police station today by appointment. She was arrested in order to be interviewed and is co-operating fully with inquiries," Goodman said in a statement.

"The interview relates to a video handed to police earlier this year," he said.

Britain's The Sun tabloid in January published still images from a video that it claimed showed Winehouse inhaling fumes from a small pipe. The images were said to have been filmed during a party at her home.

Winehouse, who is famous for her hit "Rehab," has had a turbulent private life. Last month she was cautioned by police for assault after she slapped a man during a night out. That means no charges were filed but the incident was placed on her record.

Shortly after The Sun published still photographs of the video, Winehouse entered a London rehabilitation centre.

Her release on police bail means she has not been charged with an offence but that officers can recall her for more questioning at any time.