British reports say Amy Winehouse was in a drug and alcohol binge fog in the week leading up to her death at the age of 27.

"She has spent the last seven days on a massive bender, and people were saying she's going to drink herself to death," one friend told the Mirror.

By the time Friday night arrived, her last, friends say Winehouse wanted a "big" Friday night via a massive drug and alcohol binge that resulted in the singer-songwriter's death .

Winehouse's final hours were reportedly a blur of drug buying and binging, resulting in a fatal overdose. Tabloids are claiming Winehouse was seen Friday night, hours before her death, buying drugs from a dealer in the Camden area. They claim Winehouse was under the influence of alcohol while buying cocaine, heroine, ecstasy and ketamine.

Police have not yet released an official cause of Amy Winehouse's death, and an autopsy to determine the official cause will not be performed before Monday morning, authorities say. But details emerging point to drug and alcohol overdose from a massive binge.

"Amy seemed determined to have a big one on Friday night," a source told The People, a London tabloid. "She was out in Camden on Friday evening, but seemed determined to carry the party back at her flat. None of us know who was with her into the early hours of Saturday. But getting out of it was clearly her main priority of the night."

A different source told The People they had seen Winehouse buying cocaine from a well known dealer in the Camden area Friday.

But cocaine and alcohol may not have been the only drugs in Winehouse's system at the time of her death. Another source told The People that Winehouse may have died from a "bad" ecstasy pill that killed her when mixed with large amounts of alcohol she was said to have consumed.

"It was an ecstasy overdose," the source said. "She could do cocaine until the cows come home. But this was obviously a dodgy (ecstasy) pill."

Winehouse's long battle with drug and alcohol addiction has been well documented in the years since the singer-songwriter rocketed to fame in 2007. In the years since, she claimed five Grammy awards and sold more than five million albums, but she also has been a regular feature subject in tabloids for drug and alcohol use.

Sources say Winehouse was seen buying cocaine, heroine, ecstasy and katimine in the hours leading up to her death. The say Winehouse was "devastated" over a recent split from director Traviss, and wanted to get "out of it."

Traviss broke up with Winehouse one month ago after concluding she was never going to be able to rehabilitate from drug and alcohol addictions and binging. She was "inconsolable" after the breakup, the Daily Mail reports.

She was pronounced dead early Saturday morning after police were called to her North London home.