Thousands of policemen and soldiers are deployed around Tanjung Gusta prison to blockade roads linking Medan, the capital of North Sumatra, to other provinces were blockaded while fire brigades were battling the fires.
About 200 prisoners escaped following the riot late Thursday in which three prison employees and two inmates were killed.
Officers deployed to hunt the escaped inmates have re-arrested 55 of them and still searching for remaining inmates who still at large, said local police chief in Lt. Col. Nico Afinta. Three of 22 convicted terrorists have been recaptured.
The riot appeared to have been triggered by a power blackout that knocked out water pumps, leaving inmates without water since yesterday morning.
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Inmates forced their way out from the prison while others set offices on fire and held about 15 officers captive inside the prison, prison directorate spokesman Akbar Hadi said. None of the hostages was still being held today morning. The facility holds nearly 2,600 prisoners while its normal capacity is 1,500, Hadi said.
Hadi estimated about 500 inmates were resisting calls to stop the riot and said an evacuation was planned for the safety of inmates who could become hostages as tensions showed no signs of easing.
Vice Minister of justice Denny Indrayana, who is in Medan overseeing the operation, has requested evacuation of all inmates and appealed those remain escape to give themselves to the authorities.
No further information was available on injuries.