At least three Ansar members were killed and 40 others injured when a bus carrying them collided head-on with a truck in Sutang area of Habiganj sadar upazila on Tuesday morning.The deceased were identified as Sharif Miah, Ziaur Rahman and and Babul Mia.According to sources, a bus carrying Ansar members was going to Srimongal of Moulvibazar from Brahmanbaria. But the bus collided head-on with a truck coming from opposite side, leaving 18 Ansar members injured.Habiganj district Ansar Adjutant Mahbubur Rahman confirmed the matter to the journalists.