Authorities in western Indonesia are searching for more than 150 prisoners who escaped from an overcrowded prison during a riot.
Prison officials at the prison in the city of Medan said the riot was triggered by a power outage that affected the water supply.
Inmates set fires in the facility and more than 150 prisoners escaped. Prison sources say at least a dozen terrorists were among those who fled. Prison sources also said several guards are being held hostage.
Authorities said thousands of police have been deployed around the prison, while firefighters are battling blazes inside.