At least one security man was killed on Wednesday and three others were injured in a remote-controlled blast in the Awaran district of Balochistan.
Security officials said that a Frontier Corps (FC) convoy was on routine patrol when it was targeted with a roadside bomb planted by militants in the Mashkay area of Awaran district.
The vehicle of security forces was also destroyed in the attack.
Meanwhile, the casualties were rushed to Quetta by helicopter for treatment.