Backpackers and holidaymakers flocking to Bali’s idyllic shores are now facing the threat of severe prison sentences should they overstay their visas, as Indonesia launches a stringent crackdown on immigration offences.

Previously, tourists who lingered beyond their visa limits in Indonesia were at risk of serving between six months to a year behind bars. However, in a dramatic policy shift announced last week by the Indonesian government, those guilty of overstaying can now be slapped with…