Gunship helicopters pound at Bara in Khyber tribal region killing 20 militant fighters including a key commander, reports said on Friday. Commander Saifur said to be among the militants died in shelling of gunship helicopters, reports said. Security forces operation continued against the outlawed Lashkar-e-Islam and other militants in tehsil Bara o Khyber region. Two security men were also injured in clashes with militants, which were transferred to Peshawar for medical aid.