At least five African migrants died and another 10 were missing after a boat sank off Tunisia, as they tried to cross the Mediterranean to Italy, a judicial official said on Saturday. The coastguard rescued 20 migrants who had been on the overcrowded boat, which sank off Louata in Sfax region on Friday, the official told Reuters. The coastline of Sfax has become a major departure point for people fleeing poverty in Africa and the Middle East for a chance at a better life in Europe. In recent months, hundreds of people have drowned off the Tunisian coast, with an increase in the frequency of at…