KOHAT - At least seven militants were killed, 15 others arrested while four persons kidnapped for ransom have been recovered during security forces' action in Ghorzandi area of Lachi Tehsil, District Kohat, officials revealed on Sunday. According to the officials, the armed forces after public complaints and reports conducted a well-planned action against certain militants' hideouts as result of which seven of them were killed, two others injured while 15 arrested. The officials also informed that three contractors, kidnapped from Hangu on February 11 have also been recovered in the operation. All the hostages were later shifted to Hangu. The officials further disclosed that the military action is in progress in other areas too where militants have established their captivity centres to detain persons kidnapped for ransom. Moreover, the efforts for the safe recovery of seven kidnapped school children are underway, the officials added. AFP adds: Suspected Taliban Sunday kidnapped an FC commander and five bodyguards in Swat Valley, where a fragile ceasefire has held for two weeks, security officials said. The army also lodged a "strong protest" after soldiers were ambushed in the northwest region. The kidnapped officer was travelling to Swat's main city of Mingora when his vehicle was stopped by scores of armed militants at a checkpoint in the Qamber area, an official said. "Hassam Ud Din, a district officer in the Frontier Constabulary, along with his five bodyguards and vehicle were taken by the militants in Qamber," regional police chief Dilawar Bangash told AFP. "We are sure the Taliban kidnapped him," he added. An intelligence official told AFP that up to 150 armed people had set up a checkpoint in a place where the officer was snatched. There was no immediate claim for the incident and the Taliban were not immediately reachable for comment. The army said separately that a convoy of security forces transporting an unwell soldier was attacked Sunday with roadside bombs and small arms fire near Sarsanai, in Kabal town, a known Taliban stronghold. "One soldier was injured. The security forces have lodged a strong protest with the concerned," the army said in a statement. Local administration officials blamed the Taliban but a spokesman for Soofi Mohammad said the incident stemmed from a "misunderstanding."