"There were a few clashes with police during a standoff and in the early morning when the persons who were in custody were transported to a jail. As a result of clashes 15 National Guard troops and 12 police personnel asked for medical help because of gas poisoning. Protesters used riot gas, sticks and stones. Police and National Guard have not used gas. Several empty cans of Cobra gas were found on the scene. Gas is not part of equipment carried by police or National Guard troops. A criminal case has been opened into the incident. Investigation will be done today. We will give a legal assessment of the actions committed by those who took part [in clashes]," said the police chief.