NEW : Authorities did not identify Gilberto as a suspect . Saniag mayor led group that initially stopped civilians , police cite reports as saying . While the investigation is ongoing , a spokesman for the country 's national police has said that Andal Ampatuan Jr. has been linked to the crime , according to local media reports . Ampatuan hold leadership positions in Philippines . Authorities disband paramilitary force in the southern Mindanao .
NEW : Authorities did not identify Gilberto as a suspect . Saniag mayor led group that initially stopped civilians , police cite reports as saying . Ampatuan hold leadership positions in Philippines . Authorities disband paramilitary force in the southern Mindanao .