
Another potential witness in a trial over the massacre of 57 people in the Philippines has been killed.
This is the sixth person among witnesses, potential witnesses or their relatives killed since the case went to court in 2010.
Prosecutors had wanted to approach the man, who was alleged to have sent gunmen to take part in the massacre, to testify at the trial as a state witness.
Human Rights Watch says that whoever is behind the killings is sending a clear message of intimidation.
