A riot inside a high-security detention center outside Indonesia's capital, which includes holding areas for terrorism suspects, stretched for hours into Wednesday afternoon, officials said, and the media arm for the Islamic State claimed its loyalists were holding hostages there. This is the same detention centre where three Islamic militants were detained for allegedly planning an attack on headquarters and police stations in Depok.
"One of our officers is still being held hostage".
Authorities said it began when an inmate shouted and banged on the walls to protest a delay in getting food from his family that was being checked by officials.
He said the prison, at the Mobile Police Brigade (Brimob) headquarters, held around 130 convicted terrorists, but it was unclear how many were involved in the clashes.
In a message carried on its Amaq news agency, the Islamic State group claimed responsibility for the incident and claimed 10 counter-terrorism officers had been killed. "But if there is a threat to officers or others, we will take very strong action", he said, adding that the hostage was reported to be safe and the officers' bodies have been transferred to a nearby hospital.
Among the facility's prisoners is Aman Abdurrahman, an Islamic radical jailed for orchestrating an attack in Jakarta in 2016 that left eight people dead.
Security around the prison has been boosted and civilians are not allowed to get close to the entrance, according to the police.
Abdurrahman and Purnama, better known as Ahok, are not housed in the part of the prison where the riot broke out.
Two years ago, almost 500 inmates broke out from a prison after complaining about overcrowding and extortion.