...G4S has been reported to the Government for accepting a multi-million pound contract to service America's Guantanamo Bay Naval Base, which contains the notorious prison for terrorism suspects. The world's largest security firm may have broken international guidelines by signing the £70m contract, under which it agreed to provide "janitorial services" to the prison...that houses 149 inmates not charged with any offence, campaigners said. A formal complaint has been lodged with the Department for Business, Innovation and Skills (BIS) by the human rights group Reprieve, which said that by working at Guantanamo Bay G4S staff "may contribute to the ongoing human rights violations"...A G4S spokesperson said: "G4S Government Solutions provides facilities services and general maintenance support to... Guantanamo Bay in areas such as housing and facilities for soldiers and their families. It provides similar services to numerous US Navy bases around the world. It does not have any responsibility for the detention centre. G4S announced its plans to dispose of G4S Government Solutions in 2013 and is currently negotiating the sale of the company."