Tulisa was arrested on Tuesday over drug pushing claims, it has been revealed.
The 24-year-old singer, who first found fame with N-Dubz, was arrested by appointment at London's Belgravia police station, alongside close friend and rapper Mike GLC, the Mirror reported.
The arrests - on suspicion of offences which carry jail terms - come after Metropolitan Police officers confirmed they were "considering" information claiming the star had fixed an 820-pound cocaine deal and boasted of her drug dealer connections.
The former 'X Factor' judge was allegedly filmed offering to supply cocaine through a friend at upmarket Nobu restaurant in London's Mayfair.
The pair were both later released on police bail after until July pending further inquiries after several hours of questioning.
After being bailed, defiant rapper Mike insisted that the pair were "innocent", and claimed the footage had been "taken out of context".