VIENNA — Police arrested three people in Hungary overnight in connection with the deaths of 71 migrants found in a refrigerated truck abandoned on Austria's main highway, a police official said Friday. The migrants likely suffocated, said Hans Peter Doskozil, chief of police in eastern Burgenland province. A Syrian travel document was found, indicating that at least some of the dead were refugees fleeing violence in Syria, though it wasn't clear if some were for elsewhere. The 71 included eight women and four children. It was the latest tragedy in a year that has seen tens of thousands of people risking everything to seek a better life or refuge in wealthy European countries. At least 2,500 have died, mostly at sea, where another tragedy was unfolding Friday as Libyan authorities counted bodies from two ships that capsized off the coast of that country. The UN refugee agency said 200 were missing and feared dead. Migrants fearful of death at sea in overcrowded and flimsy boats have increasingly turned to using a land route to Europe through the Western Balkans. — AP