The suicide bomber had between seven and eight kilogrammes of explosives on his body. Security forces arrived at the spot and cordoned off the area. A state of emergency has been declared at local hospitals and security has been tightened in all adjoining areas. Earlier today, at least four terrorists were killed in what appears to be a failed attack at Christian Colony near Warsak Dam on the outskirts of Peshawar. They tried to enter Chrisitan Colony in Warsak village near Warsak Dam where an Army air defense unit is also stationed. One Chrisitan has been killed while two private security guards Khud Ali and Najeem and one police constable Sajjad have been wounded seriously,” said a police official.