Turkish and American officials are investigating letters containing an unidentified yellow powder that were sent to the consulates of the US, Belgium, Canada, France, and Germany in Istanbul; nine people have been sent to the hospital for observation. Turkish media reported that Basil Hassan, a Dane wanted by Denmark for attempting to kill writer Lars Hedegaard, was released by Turkish officials sometime in July, not during a prisoner swap with the Islamic State in September. The Justice Ministry refused to disclose whether Islamic State militants Çendrim Ramadani, Benjamin Xu, and Muhammed Zakiri are still in custody. Police detained 17 students after clashes at Istanbul University between Islamic State supporters and opponents. Intelligence reports warned that Islamic State cells plan to carry out suicide bombings in seven Turkish provinces.
