TENGGULUN, Indonesia -- The younger brother of two militants on death row over the deadly 2002 Bali bombings visited their island prison Saturday as speculation mounted over their impending executions.

Ali Fauzi, a brother of condemned bombers Amrozi, 47, and Mukhlas, 48, left the militants' home village in East Java early Saturday to visit them in the island prison where they await the firing squad, another brother Muhammad Chozin said.

"My brother... went with the police and the district head to Nusakambangan at 2:00 am this morning in the hope of seeing the brothers for the last time," Chozin said, referring to the island prison off southern Java.

"If they're executed, he'll help prepare their bodies for burial," he said.

A source in the prison confirmed that Fauzi had arrived but could not say if he had met the brothers or if he would have access to their bodies.

News website Detikcom reported that relatives of the bombers would be allowed to witness their execution.

Speculation has been rife in Indonesia over the exact date of the execution of bombers Amrozi, Muklas and Imam Samudra, 38, over the bombings, which killed 202 people, mostly foreign tourists, on the Hindu-majority holiday island.

Authorities have said the bombers will be executed in "early" November but have not given a clear date, allowing Islamist sympathisers time to rally to their cause.