At least eight people have been killed and more than 20 others injured in a bomb explosion in the northern Syrian city of Azaz. The UK-based Syrian Observatory for Human Rights reported the explosion at a busy market in the centre of the city in Aleppo province overnight on Saturday night. Rescue teams were on site. The explosion caused considerable material damage and triggered fires, the group added. The area north of Aleppo, where the city of Azaz is located, is controlled by Turkey. Syria has been in a state of civil war since 2011. Today, the country is divided. Head of state Bashar al-As…