Four passengers of a human hauler were killed and 15 others were injured in a road accident at Chhagirshakata Dargah intersection in Chakaria upazila of Cox’s Bazar on Friday.The deceased were identified as Muhammad Kalu (45), his daughter Rina Akter (17) and Kala Khatun (48) of Moheshkhali, and Shahriar Rayhan, 23, of Chakaria.The accident occurred when the Chakaria-bound human hauler collided head-on with a Cox’s Bazar-bound bus of Saudia Paribahan, local people said.Malomghat highway police outpost In-charge SI Ashiqur Rahman said the dead bodies have been sent to Cox’s Bazar Medical College morgue.