Three suicide bombings in Pakistan killed at least 52 people on Thursday, the latest attacks in a wave of violence following a government raid on a radical mosque.
The deadliest attack killed at least 30 Pakistani police and bystanders when a car bomb targeted a convoy of Chinese engineers and a police escort in southern Balochistan.
Seven others died after another car bomber attacked a police academy in a northwestern town near the city of Peshawar.
The third attack killed at least 15 people when a suicide bomber blew himself up late Thursday during evening prayers at an army mosque in Kohat, near the border with Afghanistan.
President Pervez Musharraf is calling for unity against the rising number of extremist attacks. He blamed the violence on a few elements intent on killing fellow Muslims.
More than 160 people have died in militant attacks since the government raided the Red Mosque in Islamabad last week. Militants have threatened to avenge the deaths of 75 mosque supporters and a top cleric.
Adding to the tensions, pro-Taleban militants in the North Waziristan tribal region pulled out of a controversial peace deal with the government last Sunday.