Philippine President Rodrigo Duterte has said his country's Catholic bishops are "useless fools" and should be "killed", the latest attack by the controversial leader on the church, which has opposed his deadly war on drugs.

In a speech at the presidential palace on Wednesday, Duterte was quoted in local news reports as saying in a mix of Filipino and English: "These bishops that you guys have, kill them. They are useless fools. All they do is criticise."

Addressing local government officials, Duterte also blasted the Catholic Church again, calling it "the most hypocritical institution" and saying his God is different from the one Catholics worship.

"I never said I do not believe in God. What I said is your God is stupid, mine has a lot of common sense. That's what I told the bishops. I never said I was an atheist," he said in an apparent reference to an earlier statement when he was quoted as saying God is "stupid" and a "son of a whore".

The Philippines has more than 100 million people, an estimated 90 percent of whom identify as Catholic.

Duterte is known for making off-the-cuff remarks without much consideration for their content.

Earlier this week, he said he used cannabis to stay awake, but later retracted the statement saying he was just joking. (Aljazeera)

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