Gunmen killed at least 15 people in Syria, mostly government soldiers travelling on a bus in the second such road ambush in recent days, a war monitor said yesterday. The ambush late Sunday resulted in the deaths of eight soldiers, four allied fighters and three civilians, the Britain-based Syrian Observatory for Human Rights said, updating an earlier toll. There was no immediate claim of responsibility, but the monitor said the Islamic State group was to blame. Another 15 people were wounded, with cars and fuel tankers also attacked, in the Wadi al-Azib area of Hama province.