The crash of a tourist bus near the Bulgarian capital has killed at least 16 people and injured 26 others, officials say.
Nikolay Gabrovski from Sofia's emergency hospital said five people still had life-threatening injuries on August 26, a day after the tourist bus flipped over on a highway.
Police said the accident, near the town of Svoge, occurred about 50 kilometers from Sofia shortly after 5 p.m. local time, and that the bus crushed four other vehicles.
They said the bus was carrying 33 pilgrims from the village of Bozhurishte, north of the capital, and a driver.
The passengers were on their way to visit a monastery.
An investigation into the cause of the crash has been launched.
Bulgaria, the European Union's poorest member, has a network of roads that suffer from poor maintenance.
The Bulgarian government has declared August 27 to be a national day of mourning.