In Pakistan, atleast 19 people have been killed and several injured while a suicide bomber struck a vehicle carrying Pakistani security personnel in the restive Khyber tribal region.The witnesses said that a teenage bomber, who was on foot, was hiding in a roadside market in Jamrud sub-division of Khyber Agency. He detonated his explosive jacket when the vehicle was passing the area.Army sources said that eleven security personnel including an officer, and eight civilians were killed in the blast. Local residents said traffic on the Pakistan-Afghanistan highway was suspended after the attack. Security forces cordoned off the site of the blast and launched a search operation.