UN: Afghan Refugees Harassed in Pakistan --- ISLAMABAD — The U.N. refugee agency is warning that Afghan refugees in Pakistan are increasingly becoming victims of extortion, illegal detention and harassment. Pakistan has taken in millions of Afghans since the Soviet invasion in 1979 and has some 1.6 million registered Afghan refugees. --- According to the United Nations High Commissioner for Refugees, hundreds of registered Afghan refugees have recently been illegally swept up and briefly held by Pakistani authorities during security operations.--- U.N. representative Neill Wright said most of the arrests came during operations in Pakistan's restive southwestern province of Baluchistan and the southern city of Karachi, mainly because of institutional delays in updating refugee status cards. - voanews