Four electricity poles near Barkhan, in the border area of Punjab, Sindh and Balochistan, were blown up on Saturday morning, disrupting the power supply to the area. WAPDA authorities despatched a team from Dera Ghazi Khan to restore power. "Outlaws used explosives to blow up four electricity poles near Barkhan," said a police statement. A QESCO spokesman said that power would be restored in the next 72 hours, Online reported. A bomb exploded outside the office of the pro-government Pakistan Workers Party in Qalat on Friday, damaging walls and windows but causing no casualties, a police official told AP on Saturday. No one claimed responsibility for the blast.