A bus crash in Bulgaria has killed at least 46 people

A tragic bus accident in Bulgaria resulted in the deaths of at least 45 people, including 12 children. The bus was part of a convoy returning from Istanbul to North Macedonia. The cause of the accident is still unknown, but local reports suggest that the steep gradient of the roads may contribute to frequent accidents in the area. Investigators are considering human error or a technical malfunction as the most likely explanations.

What was the outcome of the bus accident mentioned in the text?

How many people were reported to be killed in the bus accident?

What was the bus's route before the accident occurred?

What did the local mayor say about the frequency of accidents in the area?

What were the two most likely explanations for the accident according to the investigators?