Scotland Yard said last month that it would investigate a video allegedly showing Grammy Award-nominated singer Amy Winehouse consume drugs and an interview has reportedly taken place, according to British media reports.

A video emerged last month apparently showing troubled singer Amy Winehouse smoke a crack-cocaine pipe and say how she had just taken six Valium pills. Shortly after the footage was made public by British paper The Sun, Winehouse entered rehab to treat her drug problem.

At the time, Scotland Yard confirmed that it would view the tape provided by the paper and decide whether an investigation was necessary.

The paper now reports that officers visited the 24-year-old at a north London clinic, where they questioned her for two hours. An unnamed source revealed: “She was not arrested. She is co-operating with police.”

The Metropolitan Police said in a statement: “The woman has not been arrested but is being interviewed under caution. Police inquiries into the matter are continuing,” Reuters UK reports.

Winehouse has been in the facility since Jan. 24. She left the clinic for a short period Monday, in order to apply for a visa at the US embassy, BBC News reports. The singer, who has received six Grammy nominations, including record and song of the year for “Rehab” and best album for “Back to Black,” plans to attend and perform as planned at the Grammy Awards in Los Angeles on Sunday.

The video in question was allegedly filmed at Winehouse’s London home, hours before she attended a court hearing to support husband Blake Fielder-Civil, currently in jail on charges related to a pub brawl.

The singer’s record label, Universal Music Group, issued a statement last month emphasizing its support. “Amy is the most talented and important musical artist of her generation and has made huge strides on her road to recovery,” the statement said.

“Universal Music Group wants nothing more than to see her take the time she needs to come back to full health and fulfill her incredible potential with the label.”

Winehouse may have problems receiving the visa due to past drug problems. Last October she was arrested in Norway for possession of cannabis. She paid a fine and later said she had not been aware that under Norwegian law, paying the fine is equivalent to pleading guilty. She plans to appeal against the fine later this month in a Norwegian court.