A passenger bus overturned in western Turkey early Sunday, killing at least 14 and wounding 18, according to emergency responders, Anadolu Agency reports.

The bus went out of control and overturned on the Balikesir Highway while heading to Edremit in the western Balikesir province.

The 18 wounded passengers were rushed to nearby hospitals.

Although rescue and emergency teams were dispatched to the crash site, 11 people died at the scene.

An investigation to determine the cause of the accident is underway.

Source: Azerbaijan State News Agency