MANILA, Aug. 12 (Xinhua) — At least 10 people were killed, including two Chinese inmates, following an explosion inside a jail in Paranque City Thursday night, radio DZBB reported Friday.

Quoting the police and Paranaque Mayor Edwin Olivarez, the report said the explosion took place around 8:30 p.m. inside the office of jail warden Supt. Gerald Bantag on the first floor of the building.

Bantag also sustained shrapnel wounds, according to the report.

The report, quoting witnesses, said that residents near the city jail heard at least three explosions following gunfire inside the jail compound.

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