The case filed against Philippine President Rodrigo Duterte before the International Criminal Court in The Hague is a "very good step" toward stopping drug-related killings, a Catholic bishop said.

"It is our hope that this move will inject fear into the hearts and minds of the accused officials so that they will eventually and sincerely put a stop to these merciless killings," said Bishop Arturo Bastes of Sorsogon.

Ucanews.com reported that the bishop said the International Criminal Court should "take serious action against the continuous and seemingly condoned violation of human rights in the Philippines."