10 people have been killed after a bomb exploded in the city of Davao on the southern Philippine island of Mindanao.

Dozens of people were injured in the explosion at a night-time market, although the cause of the blast is so far unknown.

Davao is the hometown of the country's president, Rodrigo Duterte. A former mayor of the city, he flies back there most weekends, and is reported to be sheltering at a police station after the explosion.

Mr. Duterte is a controversial figure, and made headlines recently when he threatened to leave the United Nations after it criticised his war on drugs, calling it a crime under international law.

He also accused the UN of failing on terrorism, hunger and ending conflicts.

Mr Duterte, who was elected in May, has sanctioned the killing of traffickers to try to wipe out the drugs trade. Around 900 suspected drug traffickers have been killed since Mr Duterte took office.

That policy has been repeatedly condemned by the UN as a violation of human rights.

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