Karnal, Aug. 26 -- Four elderly pilgrims from Punjab were killed when a Haryana Roadways bus and their pick-up vehicle collided near Keorak village of Kaithal on Monday morning, police said. The accident occurred near a petrol station on the Kaithal-Pehowa section of National Highway-152 at 8am, the police said, adding the collision was so severe that four of the seven passengers in the pick-up vehicle died on the spot. The three injured were rushed to the civil hospital in Kaithal from where they were referred to Post-Graduate Institute of Medical Education and Research (PGIMER) in Chandigarh. The bus was headed from Hisar's Adampur to Chandigarh. P3...