Twenty-one members of a marriage party were killed and 20 others injured when their bus rammed into a tree near Grand Trunk road in Dhanbad district today.<br/><br/>The bus was returning to Salampur in West Bengal's Chittaranjan town when the driver lost control over the vehicle at Barwa near GT road and hit a tree, killing 18 people on the spot. <br/><br/>Deputy Superintendent of Police, Sanjay Ranjan said, three passengers died at a local hospital. The marriage party had gone to Munda Basti in Gobindpur and was returning home when the mishap occurred at 6.30 in the morning.