An Indonesian lawyer for condemned Bali Nine duo Andrew Chan and Myuran Sukumaran has tried to enlist the support of heavy metal band Metallica in an attempt to get mercy for the pair. Indonesian President Joko Widodo is a known fan of the rockers, and on Sunday morning lawyer Todung Mulya Lubis made the unusual appeal to the band via social media. 'Hello @Metallica? You have to campaign to save life in Indonesia from Death Penalty. Come, sing and make plea to @jokowi_do2 (the president)', he posted to his Twitter account. Mr Lubis also wrote a follow up tweet, sending a YouTube link to Metallica telling the band 'the whole world is watching'. Scroll down for video . Indonesian lawyer for Australians drug duo Andrew Chan and Myuran Sukumaran has appealing to rock band Metallica for help getting mercy for the pair . Todung Mulya Lubis had this message for the heavy metal band on Sunday . 'Hello @Metallica. I am sending this link,' he wrote, accompanied by the URL. 'The World is Watching.' the lawyer's tweet concluded. This comes as the Bali Nine pair's lawyer has argued their case be heard by the administrative court, a day after the country's attorney general said more prisoners could be added to the execution list. Lawyers for the Australian pair want to challenge Joko Widodo's denial of their clemency appeal on the grounds that he did not take into account their individual cases, The Age reported. Sukumaran (left) and Chan (right) are among nine drug felons on Nusakambangan, also known as 'death island' The Bali Nine duo's lawyer also posted this, knowing that Indonesian President Joko Widodo is a big metal fan . Chan and Sukumaran are among nine drug felons awaiting execution on Nusakambangan, also known as 'death island' however a tenth is reportedly on the way to the island. Mother of two Mary Jane Fiesta Veloso, from the Philippines, is due to be transferred there in coming days after having her request for a judicial review rejected. However the Philippine government have reportedly committed toe exhausting all avenues to try and save the mother, who was arrested in 2010 carrying 2.6 kilograms of heroin into Indonesia. Ealier this year death metal band Napalm Death penned a letter to one of their fans - Indonesian President Joko Widodo . The plea from the Bali Nine duo's lawyers to Metallica is not the first time a heavy metal band has been involved in the case, it is widely known that Widodo is a big fan of heavy metal. Earlier this year a British band known as one of the Indonesian President's favourites penned a letter to Joko Widodo asking him to grant clemency to Australian convicted drug traffickers Andrew Chan and Myruan Sukumaran. Mr Widodo is said to be a big fan of metal, and recently revealed in an interview that he discovered the genre when he stumbled across a thrash metal band gig when he was just 14 years old. Knowing he was a fan of the band, Napalm Death's lead singer Mark 'Barney' Greenway posted the open letter addressed to Mr Widodo to the band's Facebook page in January, for their 729,000 followers to read. The band's lead singer Mark 'Barney' Greenway penned a post asking Widodo to grant clemency to Australian drug smugglers Andrew Chan and Myuran Sukumaran . Widodo is a big fan of metal and counts Metallica, Napalm Death and Lamb of God among his favourites . 'I am appealing directly to you to please spare the lives of Andrew Chan and Myuran Sukumaran, the two Australian citizens who are currently awaiting the death sentence in Indonesia for heroin smuggling,' the letter began. 'As a follower of our band Napalm Death, you would appreciate that our lyrics and ethos challenge the unbroken cycle of violence in the world, whether it comes from a state or as an individual. 'If these things are not challenged and ultimately changed, I believe we will never truly move forward as humankind,' the post continued. Joko Widodo has been pictured posing while wearing a Napalm Death t-shirt on multiple occasions, and is reportedly a big fan of other heavy metal bands such as Metallica, Megadeath and Lamb of God. Widodo is known for his hardline approach to issues such as drug trafficking . He discovered the genre when he stumbled across a thrash metal band gig when he was just 14 years old . Dear Mr Widodo, . I am appealing directly to you to please spare the lives of Andrew Chan and Myuran Sukumaran, the two Australian citizens who are currently awaiting the death sentence in Indonesia for heroin smuggling. As a follower of our band Napalm Death, you would appreciate that our lyrics and ethos challenge the unbroken cycle of violence in the world, whether it comes from a state or as an individual. If these things are not challenged and ultimately changed, I believe we will never truly move forward as humankind. I understand that you are standing as a leader determined to change things for the better, and so I believe granting clemency would be a major step forward in this pursuit of betterment. I appreciate that heroin can be damaging on many levels, but I believe that this is a much deeper issue that cannot be changed or altered by simply taking away the lives of people. Again, I respectfully ask that you make a real difference and overturn these sentences. In hope and peace, . Mark 'Barney' Greenway (Napalm Death) He is also known for his hardline approach to issues such as drug trafficking, selling his election campaign - in part - on tougher penalties for criminals. Napalm Death is a band credited with defining the grindcore genre - an amalgamation of elements from hardcore death and punk metal. They also hold a Guinness World Record for the world's shortest song - titled You Suffer with a duration of 1.316 seconds. On Monday it was revealed the Bali Nine pair Andrew Chan and Myuran Sukumaran will be killed by a firing squad in the next round of executions. On Monday it was revealed the Bali Nine pair Andrew Chan (right) and Myuran Sukumaran (left) will be killed by a firing squad in the next round of executions . The pair, who have been on death row since 2006, could face death at any stage under a crackdown by the Indonesia government on drug cases . The pair, who have been on death row since 2006, could face death at any stage under a crackdown by the Indonesia government on drug cases. According to Nine News Sukumaran and Chan will be taken in the dead of night from their cells at Kerobokan Prison in Denpasar and flown to Jogjakarta. From there they will take a five-hour journey through the villages of Java before they arrive at the port of Cilicap. The men will then be taken by boat into restricted waters, where they will get their first glimpse of the notorious correctional centre on Nusa Kambangan. From there the Australian men will be housed in one of the seven prisons on the island, where they will live out the remainder of their days before they are lined up in front of the executioners. Nusa Kambangan is where the Bali bombers faced the firing squad and where six drug criminals were executed two weeks ago.
Lawyer for Bali Nine duo makes plea on social media to Metallica . He tweeted the heavy metal band asking for their help in getting mercy . Indonesian President Joko Widodo is a known fan of the rockers . Previously UK death metal band Napalm Death wrote to Widodo . Asked him to grant clemency for Andrew Chan and Myuran Sukumaran . Their execution may be delayed again due to more prisoners being transferred to Nusakambangan .