Libyan security forces on Sunday killed three armed men suspected of being behind seven failed bomb plots, a state spokesman told Reuters.Security forces surprised the three armed men inside a farm near Aziziya, south of Tripoli, in possession of the same kind of explosives used in seven previous bomb plots, said Saleh Darhoub, spokesman of the National Transitional Council. Several violent incidents have rocked Libya in recent days and on Sunday the International Committee of the Red Cross announced it was suspending its activity in the country's second biggest city, after one of its compounds was attacked with grenades and rockets.