A security man was martyred and three others injured in a landmine blast in Dera Bugti on Sunday.
Security sources said that unidentified miscreants had planted landmine by roadside in Uch area of Dera Bugti which went off when a security man walking by the site struck it.
As a result of explosion, the security man was martyred on the scene while three others sustained critical wounds and were shifted to hospital for treatment.
