An explosion has killed 20 and injured dozens more in Pakistan\'s tribal region bordering Afghanistan on Friday, a government official told the international news agency, CNN. Islam Zeb, a senior government official of Bajaur Agency, said that a suicide bomber ran into a crowed group of paramilitary members and blew himself up. The paramilitary soldiers were gathered and waiting to be taken to different locations for their routine patrolling. Zeb said that the incident took place in Khar, one of the main towns of Bajaur Agency. Four paramilitary soldiers were killed as well as 16 civilians. Among the dead were six children.