 The bomb, estimated to be about one ton in weight, brought down at least 10 buildings and coffee shops and obliterated market stalls in a largely Shi‘ite enclave less than a half mile from the Tigris River.The attacks killed at least 135 and injured 339 others, making it the deadliest attack since the Sadr City bombings of 23 November 2006.The blast was the worst of four massive bomb attacks in the preceding three weeks, all targeting dense Shi'ite areas in Baghdad and Al Hillah, including an attack on 22 January 2007 in another central Baghdad market that killed at least 88 and injured more than 160.