Police in Indonesia are hunting for four foreigners who tunneled out of a prison in Bali, the BBC reports. The men escaped from Kerobokan Prison by crawling through a 39-foot-long tunnel dug under the walls, per Reuters. The prison chief says "we suspect it took more than a week to build" the 20-by-30-inch escape route. It was found filled with water on Monday morning. The inmates are believed to still be on the Indonesian resort island.
Kerobokan houses 1,379 inmates, four times the official capacity, many of them foreigners. The men were serving sentences for drug, fraud, and immigration offenses, per Reuters. Australian escapee Shaun Edward Davidson, 33, had only two and a half months left to serve. The other men hailed from Bulgaria, India, and Malaysia. (Indonesia considered a prison guarded by crocodiles.)