Malmö to Cologne is proposed as the first route for sleeper trains from Sweden.

Lyssna: Sweden could revive its night trains to Europe, agency finds

Overnight trains to the European mainland could make a comeback in a few years' time, says the Swedish Transport Administration. But some details must be ironed out first.

This summer the government commissioned a report from the agency to see if and how night trains from Sweden could work.

Bosse Andersson at the Transport Administration says they think it's possible but that several legal and technical issues need to be tackled first.

The government is examining...