French Alps bus crash: young Britons remain in critical condition Catrin Pugh, 19, and another unnamed man are understood to be in induced comas awaiting surgery in CHU de Grenoble hospital after Tuesday's fireball accident. Another 23-year-old woman, suffering 80 per cent burns, was also in intensive care in critical in a specialist burns unit in Edouard Herriot, a hospital in Lyon. Last night Miss Pugh's father was due to arrive in France after travelling from the family home in Wrexham, north Wales. The lead investigating prosecutor said yesterday that brake failure almost certainly caused the terrifying accident, which killed British bus driver Maurice Wrightson. The 63 year-old, from Ashington, Northumberland, worked for bus company Arriva and was transporting a coachload of British ski season workers back to the UK on Tuesday. The brakes are believed to have failed as he approached the final bend on a steep descent from the ski resort of Alpe-d'Huez and the vehicle ploughed into a cliff before becoming engulfed in flames. Four of the 51 young passengers were seriously injured while a further 22 suffered minor injuries. The accident occurred on an Alpine road that is often used in the Tour De France, which has 21 switchbacks as it rises eight miles to a height of 6100 feet.