British singer Tulisa Contostavlos's personal assistant has been arrested on suspicion of dealing cocaine. Gareth Varey, 28, who lives with the former N-Dubz star, was questioned by police over allegations of drug dealing and cannabis possession at Charing Cross Police Station in London on Monday (03Mar14). He was released later that afternoon. Police have confirmed his interview was part of an on-going investigation. A police statement reads, "Police have arrested a 28-year-old man in Barnet (London) on suspicion of being concerned in the supply of Class A drugs and possession of cannabis."