A powerful bomb exploded in an army office here this morning.

The bomb was so powerful that the sound of the explosion could be heard from a distance of three km, official sources said, adding security personnel have cordoned off the complex before checking some passers-by.

The bomb went off in the heavy security M-sector complex, adjoining Manipur Raj Bhavan and prestigious Johnstone Higher Secondary School, the sources said.

Further details are awaited.

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