Australian prisoner Shaun Davidson is among four inmates who have dug under the walls of the notorious Kerobokan Prison and escaped.
Bali officials confirmed the men are still on the run after fleeing the Indonesian jail on Monday morning.
The ‘hole’ was around 50cm by 75cm wide and 12 metres long, travelling underneath the prison wall and emerging at a road running along Kerobokan.
‘The tunnel is about 12 metres long and we suspect it took more than a week to build,’ the head of Kerobokan prison Tony Nainggolan said.
Australian prisoner Shaun Davidson (pictured) is among four inmates who have dug under the walls of the notorious Kerobokan Prison and escaped
A view of the tunnel that an Australian man and three other foreigners are believed to have escaped through outside Kerobokan prison
Davidson was serving a one-year prison sentence for using another person’s passport and was due to be released in August.
The Australian’s photograph, along with his three fellow escapees, have been circulated around Bali as police attempt to find the men.
The other three inmates are Dimitar Nikolov Iliev, Sayed Mohammed Said and Tee Kok King.
Nikolov Iliev, 43, from Bulgaria was serving a seven-year term for money laundering, while Said – a 31-year-old from India – was in the midst of a 14-year sentence for drugs.
Malaysian man Kok King, 50, is understood to be serving seven and a half years for drug offences.
Davidson is also wanted in Perth, charged with four offences including possessing methamphetamine and cannabis for sale or supply.
Prison guards found a small 50cm by 75cm hole behind a clinic at the prison (pictured) where they are alleged to have escaped
Bali corrections chief Surung Pasaribu confirmed he fled the Indonesian prison (pictured) on Monday morning
He didn’t attend his January 2015 court date and flew to Bali instead, which led to a warrant for his arrest being issued.
When the 33-year-old arrived in Bali he said he spent several months just ‘partying and boxing’ before arousing the suspicion of authorities.
He signed into a guest house in Kuta under a passport with the name Michael John Bayman – claiming the photo was taken when he was ‘chubby’.
After his sentencing at Denpasar Court last year, Davidson said how he spent his first few weeks in custody crammed into a small cell with 20 other people.
‘It was built for 300 people, there is 1200 there … It’s pretty hard for some of the locals in there, if they don’t have any money, you don’t eat,’ he said.
‘They don’t give you any food, they don’t give you a bed. They don’t give you anything.’
Although his sentence was only for one year, he opted to spend an an extra five months in prison rather than pay the 10 million rupiah fine ($A10,000).
Despite overcrowding in Kerobokan, he said it wasn’t the ‘living hell’ he thought it would be.
‘I guess I’m just lucky enough to have support from the outside,’ he said.
Davidson was jailed in a prison that has previously been compared to a brothel or a drug den that is notorious for overcrowding.
New Zealander Paul Conibeer spent ten months inside ‘Hotel K’ and said the notorious prison is overcrowded and flooding with crime and drugs.
Davidson (pictured) is also wanted in Perth, charged with four offences including possessing methamphetamine and cannabis for sale or supply
Davidson was sentenced in September 2016 to a year behind bars at Kerobokan Prison (pictured) for using another person’s passport
‘One of the things that really upsets me about it is that you get the death penalty for drugs and yet the very place they’ve been housed for the past 10 years is full of drugs,’ Conibeer said.
Conibeer explained in his book ‘I Survived Kerobokan’ that guards would accept bribes for having pizzas and prostitutes delivered to cells.
Just metres away from paradise, Kerobokan has been home to high-profile Australian drug smugglers Schapelle Corby, Andrew Chan and Myuran Sukumaran.
Corby spent nine years in Kerobokan after being convicted for smuggling 4.1kg of cannabis in 2005.
Prisoners look from a tower during a riot at Kerobokan Prison in 2012. The prison was built to hold just 300 prisoners but there are almost 1,500 inmates being held there.
A view inside the Kerobokan Prison shows the aftermath of a fire after riots
Chan and Sukumaran were considered ringleaders of nine Australians who were caught trying to smuggle more than eight kilograms of heroin out of Indonesia.
They were executed in 2015 after spending a decade in Kerobokan.
Prison escapes in Indonesia are not unusual.
Just last week, 76 inmates escaped Jambi jail in Sumatra after flooding caused the prison’s walls to collapse.
In May, in another Sumatran facility, Pekanbaru, 442 prisoners made a run for it following allegations of guards charging people for cells in the chronically overcrowded facility.
In January 2013 there were reports of a prisoner escaping through Kerobokan’s sewerage system in the early hours. He was captured that night at his wife’s house.