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Former Maguindanao Governor Andal Ampatuan Sr (centre) is on trial for the massacre that Enog was witness to

Former Maguindanao Governor Andal Ampatuan Sr (centre) is surrounded by police at a court in Manila in March. A man who testified in court on the Philippines' worst political massacre -- for which Ampatuan is on trial -- was found dead "probably chain-sawed to pieces" in a killing meant to silence other witnesses, an official said Friday

Maguindanao massacre: Witnesses killed

Several witnesses in the Maguindanao massacre case have been killed over the past months, some of them even dismembered.