In Pakistan, four people have been killed in a shootout at a roadblock in the semi-autonomous tribal region bordering Afghanistan.
Local authorities say the gun battle took place on Sunday when a van approached a checkpoint outside North Waziristan's main town, Miran Shah, and the occupants refused to be checked. Three attackers and one soldier were killed in the shootout.
In other violence, in the restive southwestern province of Baluchistan, explosives carried by an Afghan national exploded prematurely, seriously wounding him and two other people. Police say the incident happened at a bus terminal in the provincial capital, Quetta.
Hours earlier, in the same province, suspected tribal militants blew up a pipeline supplying gas to a main plant in the Dera Bugti district. The tribal militants say they are fighting for more autonomy and more money for the region's natural resources.