HUB- In a horrific accident today morning two passenger buses and two trucks collided on RCD highway near Gidani Balochistan, killing at least 40 persons including women and children, while more than 30 persons were injured, coast guard sources said.The accident happened when two passenger vans with over 100 people on board collided with an oil tanker near Gadani checkpost in Hub district in Balochistan province. Eyewitnesses said that a passenger van hit the oil tanker coming from opposite direction on RCD highway, while another bus that was following the tanker also hit it due to over speeding. The oil tanker exploded sparking huge fire that engulfed both vans. Police said that one of the buses was on its way to the southern port city of Karachi while the other was heading to Quetta city.The injured people were admitted to Jam Ghulam Qadir hospital where several of them were said to be in critical condition. Hospital sources said that the bodies were completely burnt and could not be identified. Both Prime Minister Nawaz Sharif and President Mamnoon Hussain expressed sorrow over the loss of lives. Balochistan Chief Minister Dr. Abdul Malik Baloch has sought a report over the incident. Sindh Chief Minister Syed Qaim Ali Shah and Federal Minister Abdul Qadir Baloch have also expressed shock over the tragedy.