The security forces found out four inter-linked tunnels and shell-proof bunkers during the search operation in Malakand and Swat. According to a press release issued by Inter Services Public Relations (ISPR) on Tuesday, the security forces discovered four tunnels and bomb-proof bunkers during search operation in Plankan area near Biakand area of Swat. All these tunnels are inter-connected with each tunnel eight meters in length. Also, the forces arrested three Afghan natives from Malakand Fort. In Swat area of Shan Khaad, five militants including militant commander Muhammed Zaman have been arrested. One more militant was arrested during the search operation in Garai Kalay village and two more extremists arrested from Kazbamakhela.