An Australian man has allegedly escaped Bali's Kerobokan prison, after he and three other foreign inmates are believed to have dug a 15-metre long tunnel underneath one of the jail's walls, police say.
Shaun Davidson, 33, from Perth was sentenced to one year in Kerobokan last September for immigration offences after he used another man's passport.
He is among four foreign prisoners who allegedly made a brazen escape on Monday sometime after 6.30am, police said.
It is believed the four made a dash for it through a tunnel found behind the jail's medical clinic.
The "hole", police said, was around 50cm by 75cm wide and 15 metres long and travels underneath the prison wall and emerges at a road running along Kerobokan.
Davidson's photograph, along with his three fellow escapees have been circulated around Bali as police attempt to find the men.
All the men are serving time for various offences at Kerobokan's Bedugul block.
Dimitar Nikolov Iliev, 43, from Bulgaria was serving a seven-year term for money laundering, alleged fellow escapee Saye Mohammed Said - a 31-year-old from India - was in the midst of a 14-year sentence for drugs, police said.
Malaysian man, Tee Kok King, 50, is understood to be serving seven-and-a-half-years for drug offences.
Davidson has just two months and 15 days left of his sentence to serve, at which point he would have faced deportation.
He also has a warrant out for his arrest on drug offences in Perth.