ROME (Reuters) - Five illegal immigrants died and 12 were missing after trying to sail to southern Italy in a dinghy in very rough seas, coastguards said on Friday. A spokesman for the navy rescue coordination centre said coastguards had found the craft 22 miles north of the southeastern port of Brindisi with 10 people alive on board. He said it was not clear where the immigrants had sailed from. Coastguards had been searching for the vessel since Thursday morning when the craft radioed for help. The spokesman said the victims probably died of cold, adding sea conditions had been "really bad indeed". He said the immigrants had told coastguards they had come from the Albanian port of Durres, but he was unsure why they were found much further south. The Italian port of Bari is much closer to Durres. The nationality of the immigrants was not immediately known. Coastguard officials were searching the area to try to pick up survivors after having to abandon aerial searches on Thursday because of the bad weather.