JAKARTA, Indonesia (AP) — A riot injured prisoners and officers at a police detention center in a city near Indonesia's capital that authorities allege was earlier being targeted by Islamic militants, police said Wednesday.

The riot happened in Depok, on Jakarta's southern outskirts, where four days earlier police arrested three Islamic militants they say planned to attack the headquarters and other police stations in the same town.

None of those injured in the riot late Tuesday was in serious condition, national police spokesman Muhammad Iqbal told reporters outside the headquarters of the elite Mobile Brigade police in Depok, on Jakarta's southern outskirts, where the riot occurred.

Some from both sides were injured he said, but didn't give a number and refused to provide more details except to say no one died.

Unconfirmed reports said the riot began when some terrorist detainees tried to grab weapons from guards on the counter-terrorism squad.

Indonesia, the world's most populous Muslim nation, has carried out a sustained crackdown on Islamic militants since the 2002 Bali bombings by Jemaah Islamiyah network that killed 202 people, mostly foreigners.

The network was neutralized following the arrests of hundreds of its militants and leaders. But new threats have emerged in recent times from Islamic State group-inspired radicals who have targeted security forces and local "infidels" instead of Westerners.