COLOMBO, Sri Lanka >> An international human rights group says there is new video evidence linking Sri Lanka’s military to the summary execution of prisoners during the final stages of the country’s civil war last year.

Human Rights Watch said Thursday that contents of a five-minute video clip aired by Britain’s Channel 4 television last month warrants a U.N. investigation.

The video was an extension of a short clip aired by the station last year showing blindfolded, naked men being shot at close range. The latest video shows the naked body of a young woman identified by Tamil media as “Isaippriya,” a news reader with the Tamil Tiger rebel television station.

The government has said the video is fake.