People looking into a hole outside Kerobokan Prison in Denpasar, Bali, yesterday. Four inmates made an audacious breakout via a 12m-long tunnel measuring 50cm by 75cm in cross section, Bali police said yesterday. The escape came just days after dozens of inmates swam through flood waters to escape a jail in Jambi province, Sumatra, after one of its walls collapsed. The fugitives from the Balinese prison were identified as Australian Shaun Edward Davidson, Bulgarian Dimitar Nikolov, Indian Sayed Muhammad and Malaysian Tee Kok King. Prison governor Tony Nainggolan said police have launched a search and believe the men are still on the island.