Divers help with the bus rescue
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Bus goes for a swim in Swiss lake

4 June 2013 Last updated at 12:43 BST

It's probably one of the last places you'd expect a bus to be - floating in Lake Geneva in Switzerland.

But that's what happened to an empty coach which was parked on the market square in the town of Vevey.

The empty bus rolled away by itself and ended up in the lake.

No one was injured and an investigation is now underway to figure out how it happened.