James Silvey, from the Trossachs Water Vole Project, said the voles now had an "established population" in the forest.

BBC: Water voles back in the Trossachs

When the Loch Lomond and Trossachs area officially became a national park in July 2002, new visitor facilities were opened.

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The draft plan sets out policies for Loch Lomond and the Trossachs, which was given its special status nearly three years ago.

BBC: NEWS | UK | Scotland | Lomond park strategy is unveiled

The force said the incident could be linked to another robbery involving a 70-year-old woman, who was targeted in the Trossachs town of Callander the same day.

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It is a short drive from Stirling on to the town of Callander, where you can do some afternoon cycling around the lush forests of the Trossachs.

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Central Scotland Police said the incident could be linked to another robbery involving a 70-year-old woman, who was targeted in the Trossachs town of Callander on the same day.

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Other organisations involved in the water vole reintroduction include the Royal Zoological Society of Scotland, Scottish Natural Heritage, Loch Lomond and the Trossachs National Park and water vole expert Derek Gow.

BBC: Water voles back in the Trossachs