A tanker truck hit a passenger bus on Kyiv-Chop highway in Zhytomyr region overnight Monday, leaving nine passengers dead.
The DAF truck driver, 55, and another nine passengers of the bus were rushed to a nearby hospital with various injuries, Zhytomyr police say.
The accident took place as the Yaremche-Zhytomyr charter driver, 66, was changing a flat tire after parking the bus on the roadside.
Traffic police and local detectives are working at the scene to establish all circumstances of the deadly crash.
A criminal investigation has been launched.