RIYADH, 27 March 2005 — Security officials have unearthed a number of drug, liquor and pornography dens during their raids here yesterday. “A total of 37 expatriates, mostly Asians, have been detained on charges of drug-trafficking alone,” a security official said. A Pakistani in possession of six kg of heroine and an Indian with 3.5 kg of hashish have been taken into custody, while five expatriates, including three Filipinos, have been arrested for sodomy.