ORAKZAI AGENCY - Eighteen extremists were killed and 11 others sustained injuries when the security forces targeted militant hideouts in Orakzai Agency on Tuesday.The forces targeted militant positions at Torsam, Akhun Kot, Ado Khel, Jandri Kili, Chapar and Khadezai localities in Mamozai, killing 18 militants and wounding 11 others.  According to sources, seven hideouts were destroyed in the operation.  However, TTP spokesman Hafiz Saeed rebuffed the reports of killing of 18 extremists, saying: “Empty houses were targeted.”Meanwhile, the forces carried out a search operation in Mulla Patay, Ghundai and Narik areas of Orakzai Agency and seized arms and ammunition.