One of the main suspects in last October's Bali bombings in Indonesia has been arrested, a senior official has said.

The man, called Idris, was captured during a three-day police operation which started on 12 June in the north Sumatran capital of Medan.

The announcement came as prosecutors demanded the death penalty for another of the bombing suspects - Amrozi bin Nurhasyim - usually referred to as Amrozi.