More than 150,000 people have been displaced in the last few days from Syria's Afrin town, a senior Kurdish official and a monitoring group said on Saturday.Hevi Mustafa, a top member of the civil authority governing the Afrin region, said people were fleeing the main town to other Kurdish-held parts of the region and to government territory.The Syrian Observatory for Human Rights, a UK-based war monitor, said Turkish warplanes and artillery struck the town overnight, and at least 150,000 had fled since Wednesday.