Spears sex tape leaked online?

A new sex tape featuring Britney Spears has reportedly surfaced on the internet.

According to Fox News in the US, a video showing a bald Spears performing sex acts on a man and two women was posted online yesterday.

The singer is said to seem "dazed" and is seen drinking alcohol and taking "what appears to be cocaine and marijuana" during the 30-minute film.

A 28-year-old man claimed to own a tape of a one-night-stand with the star last October.

Spears' car was impounded earlier this week after she abandoned it on the roadway.