A Sunni extremist gang leader, captured Saturday with five other "dangerous terrorists," confessed to killing hundreds of Shiite Muslims in recent months, police said.
Police Lt. Col. Falah al-Mohammedawi identified the alleged ringleader as Mohammed al-Janabi. The six were detained in Jaraf al-Sakhr, about 60 kilometers (40 miles) south of Baghdad, in the notorious insurgent stronghold known as the Triangle of Death.
Hundreds of Shiite police and soldiers have been killed there in the past two years.
Al-Mohammedawi said three other men were arrested on suspicion of terrorism, reports AP.
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