SWAT- At least three security officials were martyred whereas seven others received injuries in a suicide attack in Kabal area of Swat , the Inter-Services Public Relations (ISPR) reported on Saturday.
The attack was carried out at a sports unit of an army camp, the military's media wing said in a statement.
Initial reports suggested that the bomber blew himself up in a ground where soldiers were playing volleyball.
According to some sources, as many as 16 people were injured in the blast. All the injured were shifted to Combined Military Hospital Saidu Sharif.