Police have kept an eye on the supply of petroleum products in passenger buses.

The move follows recent bus accident in Banke, wherein more than half a dozen passengers were burnt to death as the bus caught flames right after the accident 'due to petroleum products being ferried in the bus'.

Inspector Kishor Kumar Dahal at Kanchanpur District Police Office, said that they have tightened the supply of petroleum products in passenger buses to prevent any fire-related road accidents.

Meanwhile, the trend of people supplying petroleum products in passenger buses from various parts of the country to Kathmandu are taking place due to shortage of petroleum products in Nepal, following the restrictions by India on Nepal-India border.