Manila: At least 10 people were killed following an explosion inside a jail in Paranaque City on Thursday, local media reported on Friday.

The explosion took place around 8:30 p.m. local time inside the office of jail warden on the first floor of the building, Xinhua quoted police and Paranaque Mayor Edwin Olivarez as saying.

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According to the report by radio DZBB, the jail warden also sustained shrapnel wounds.

The police are still looking into the cause of the explosions.

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