BAGHDAD (Reuters) - The U.S. military said on Thursday a second bomb in two days using chlorine gas may have been a copycat attack amid concerns insurgents are broadening their range of weaponry to include crude chemical bombs.
U.S. and Iraqi forces were on alert on Thursday as Iraq marked the anniversary of the bombing of a Shi'ite shrine in Samarra, an act that unleashed a wave of sectarian violence and pushed the country to the brink of all-out civil war.
A U.S. military spokesman said the military would keep a close eye to see whether insurgents were developing new methods after Wednesday's bomb involving chlorine in Baghdad.
A police source put the death toll from the bomb at three with 35 more hospitalized. An Interior Ministry source said six were killed and 73 wounded, including many sickened by the gas.
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