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Philippine mayor filmed punching sheriff in Davao City

The Philippine authorities are investigating an attack by a city mayor on a sheriff.

Sara Duterte, the mayor of Davao City in the southern Philippines, repeatedly punched the court official, Abe Andres, in the face after he refused to delay the demolition of a slum area.

The attack came during an operation that was marred by clashes between residents and police.

The mayor's actions were filmed by a TV crew and shown on national television.

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