MONTREAL ?Autopsies will be performed to determine what killed a pair of men found dead in a Montreal homeless shelter Saturday morning. The men, aged 55 and 75, were found in the same dormitory of the Maison du Pere homeless shelter at 550 Rene Levesque East. Their bodies were found around 6 a.m. as staff made their rounds, waking the men. The older of the two, who had health issues, might have died as a result of a cardio-respiratory problem. The other man, who was from France, might also have died of natural causes. An investigation will attempt to determine whether they had consumed anything that might have caused their deaths. It was a very cold night and that too might be looked at as a contributing cause in upcoming autopsies.