New York (CNN) -- This could have caused a major blast from the past.

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The blast is the first major attack in India since a September 2011 bombing outside Delhi's High Court killed 13 people.

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The citations, including one for a violation OSHA said may have led to another major accident, come from its post-blast monitoring of the plant.

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It is the first major bomb attack in India since a September 2011 blast outside Delhi's High Court killed 13 people.

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Following the blast, police said Kufa and Najaf -- both major Shiite cities -- were shut down for two hours.

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Six other soldiers were injured in the blast near Lashkar Gah as UK and US troops started a major offensive against Taliban militants in southern Afghanistan.

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