KHYBER AGENCY - Two persons, real brothers and students of primary school, sustained injuries in a mortar shell attack here in Sultan Khel, local sources said. They said that at late night, a mortar shell was fired on the hujra of a tribesman named Haji Abdul Shakoor Afridi in Sultan Khel area of Khyber Zakha Khel, which badly injured his two young sons identified as Adil Nawaz and Gul Nawaz who were asleep at the time the mortar shell hit the hujra. The injured were shifted to hospital. The mortar shell also caused damages to the hurja. Soon after the incident, the administration and forces officials rushed to spot and collected evidences for investigation, sources said. However, the forces officials denied the attack of mortar and said that undisclosed militants had hurled hand grenade, which caused damages. The area locals strongly condemned the attack on innocent and peaceful people of the area. If the government and security forces did not take appropriate security measure to stop these mortar attacks, the local tribesmen would be compelled to take to roads to protest, the locals warned. They also demanded compensation for the two injured brothers and free treatment for them. On the other hand, the political administration has launched crackdown against suspected persons in the area to check the crimes. Khasadar Force has beefed up security on the check posts in Landi Kotal.