Four people were injured in a bomb attack on a vehicle of a contractor in Ittehad Town area on Sunday. Police and rescue sources said that suspected extortionists targeted the car of a contractor named Muhammad Din Afridi with a remote controlled explosive device which was planted in a motorcycle. As a result, the guard and nephew of the contractor along with two other people were injured in the incident. The injured were later rushed to a nearby hospital. The car of the contractor, a taxi and an ambulance were badly damaged in the attack.