British Singer and former X-Factor judge Tulisa Contostavlos has been arrested on suspicion of supplying class A drugs.

It comes after a tabloid newspaper reported that she introduced one of its reporters to a drug dealer.

It is alleged the dealer then sold a quantity of cocaine to the undercover journalist.

It is believed she is being held at a police station in central London.

Reports say a 35-year-old man has also been detained as part of the investigation.