A riot has injured prisoners and some officers at a police detention center south of Indonesia's capital.
A counterterrorism investigator said to Fox News in a text message that at least five officers were killed after being taken hostage in the rioting late Tuesday, while another officer was still being held captive by the inmates.
The jail in the Mobile Police Brigade (Brimob) headquarters in Depok houses high-risk terrorism convicts as well as Jakarta's former Governor Basuki Tjahaja Purnama also known as Ahok, Efe news reported. After the situation was successfully controlled, the police confiscated a number of weapons that allegedly deprived the prisoners.
Six people have been killed in clashes between Indonesian police and Islamist militant prisoners at a high-security jail on the outskirts of the capital Jakarta, two security sources say.
Islamic State (IS, formerly ISIS) took responsibility for the attack through Amaq, the IS-affiliated website.
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A dispute had broken out with prisoners who objected to authorities making checks on food being brought into them, according to police. "To prevent things from getting worse, we're going to keep negotiating so we don't have to go to the last resort", he added, without elaborating.
"If they surrender, it will be a non-violent process. They asked for food, so we persuaded them to release [a hostage] first", said Wasisto. Some four police officers are being treated.
IS sympathisers have carried out a series of mostly low-level attacks in Indonesia over the past few years.
It comes several days after the arrest of three terror suspects accused of plotting to attack the police headquarters and other facilities in the same area.