An overcrowded bus veered off a mountain highway in Nepal on Monday, killing at least 33 people and injuring 28 others, the Daily Mail quoted government official as saying.

The injured people were brought by helicopter to Kathmandu and are being treated in two hospitals, Home Ministry official Chiranjivi Nepal said.

The bus veered off Arniko highway and rolled about 150 meters (500 feet). 

Police were still trying to determine the cause.

Source: MENA