Four prisoners of foreign citizens who fled from Kerobokan Prison in Denpasar, Bali, June 20, 2017. Johannes P. Christo

Residents observe a hole on the ground through which four foreign inmates have escaped from Kerobokan prison in Bali, June 19, 2017. Jailbreaks are common in Indonesia, where overcrowding has become a problem in prisons that are struggling to cope with poor funding and an influx of people arrested in a war on drugs. AP/Firdia Lisnawati

Bikers drive by a wall of Kerobokan prison from which four foreign inmates have escaped in Bali, June 19, 2017. He identified the four as Shaun Edward Davidson, 33, of Australia; Dimitar Nikolov Iliev, 43, of Bulgaria; Sayed Mohammed Said, 31, of India; and Tee Koko King bin Tee Kim Sai, 50, of Malaysia. AP/Firdia Lisnawati

A man puts a wooden stick into a hole on the ground through which four foreign inmates have escaped from Kerobokan prison in Bali, June 19, 2017. Prison officers became aware of the escape while conducting a morning check of inmates at the Kerobokan penitentiary in Bali's capital, Denpasar. AP/Firdia Lisnawati

Prison workers walk in front of the main entrance of the Kerobokan prison in Bali, June 19, 2017. Four foreign inmates escaped early Monday from the prison on the Indonesian resort island of Bali, police said. AP/Firdia Lisnawati