More than 20 militants were killed and several were wounded in latest clashes with the security forces in a bordering tribal agency on Friday, said officials. Security sources told KUNA that a security forces convoy hit a landmine that killed a soldier and wounded at least three others in Upper Orakzai trival agency. After the explosion, said officials, forces launched an operation, followed with fierce clashes took place between the two sides that lasted for more than an hour.More than 20 militants were kiled and several others were wounded.