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Pakistan army says 'extra-judicial killing' video faked

The Pakistani military says it is investigating a video purporting to show a firing squad of uniformed soldiers shooting dead young men who were blindfolded and bound.

Its authenticity cannot be verified. It is unclear when or where it was filmed.

Human rights groups say they have previously documented extra-judicial killings by Pakistani troops but cannot vouch for the video.

Pakistani military officials have dismissed it as fabricated.

Orla Guerin reports.