The Attorney-General’s Chambers and police are still working out the legal details of how to extradite murder convict Sirul Azhar Umar, who is fled to Australia to escape the hangman’s noose.

Former police commando Sirul Azhar Umar and colleague Azilah Hadri were in January sentenced to death for murdering Mongolian woman Altantuya Shaariibuu, while they were assigned as bodyguards for then deputy premier Najib Abdul Razak.

Deputy Home Minister Wan Junaidi Tuanku Jaafar told reporters at the Parliament lobby today that the extradition process is complicated.

"For example, in the case of Sirul who is now in Australia...Australia does not recognise the death penalty.

"So if we seek extradition, and the case goes to the court there, we will likely lose," he is quoted by Bernama as saying.

He said the same holds for blogger Alvin Tan, who courted controversy again when he published a recording of him purportedly making fun of the Muslim call for prayer yesterday.

Tan is believed to have fled to the United States, while on bail awaiting a sedition trial for inviting Muslims to break their fast during Ramadan with a pork dish, through a Facebook posting.

"Although he may have committed an offence in this country, what he did may not be considered an offence where he is residing now and we are unable to extradite him.

"Even though we have good diplomatic ties, he will be able to take the matter to court in the country he is now residing," the national newswire reported him as saying.