Pakistani security forces were caught in the firing line in clashes between foreign militants and tribesmen in northwestern Pakistan, leaving four soldiers dead, AP quoted officials as saying Sunday. The fighting between suspected Uzbek militants and Pakistani tribesmen erupted on Friday in South Waziristan, a tribal region on the border with Afghanistan, and has left dozens dead on both sides. Four soldiers died when a rocket fired in fighting between suspected al-Qaida linked foreign militants and their tribal opponents struck a military post near Wana, the main town in South Waziristan, said Maj. Gen. Waheed Arshad, the army's top spokesman. Arshad did not say which side might have fired the rocket. Following several days of peace, the fighting kicked off again Friday after the militants failed to comply with a deadline by Pakistani tribal elders to leave their territory, Interior Minister Aftab Khan Sherpao said on Friday.