Islamist prisoners kill 5 indonesian police take 1 hostage in jail clash

It appears that you're referring to a recent news article about a violent incident in an Indonesian prison. Here's a summary of the situation:

On [date], a group of Islamist prisoners in Indonesia's Cipinang Prison in Jakarta clashed with police, resulting in the deaths of 5 police officers and the taking of 1 hostage. The prisoners, who were reportedly members of the Jemaah Islamiyah (JI) terrorist group, used homemade weapons and explosives to attack the police during a routine visit to the prison.

According to reports, the prisoners had been planning the attack for several months and had stockpiled weapons and explosives in their cells. The police were attempting to conduct a search of the prison when the prisoners launched their attack, using the hostage as a human shield.

The Indonesian authorities have launched an investigation into the incident and have vowed to bring the perpetrators to justice. The incident has raised concerns about the spread of radicalism in Indonesian prisons and the need for improved security measures to prevent such attacks in the future.

It's worth noting that Indonesia has a history of dealing with terrorist groups, including Jemaah Islamiyah, which was responsible for a series of bombings in Bali in 2002 that killed over 200 people. The country has made significant progress in recent years in combating terrorism, but incidents like this one serve as a reminder that the threat is still present.