Seven climate protesters have been arrested after breaking through a perimeter fence and setting up a barricade on an airport's taxi-way.

Flights to and from Aberdeen Airport have been delayed as a result of the security breach by members of the Plane Stupid campaign group.

After talks with police, seven of the protesters gave themselves up six hours after the demonstration began - but two others remain on the roof of the terminal building.

A Grampian Police spokesman said: "We can confirm that following a dialogue between police officers and some of the protesters, seven people have released themselves from their position on the runway and have been taken into police custody.

"Two protesters remain on the airport terminal building roof. Work continues to peacefully resolve the protest."

Plane Stupid said the activists broke through the perimeter fence at about 2am on Tuesday in protest against the airport's expansion plans and the resulting increase in greenhouse gas emissions.

The group added that the activists were dressed as golfers in the style of US property tycoon Donald Trump, who is planning to build a major international golf resort in the area and supports the expansion of the airport.

A spokesman for airport operator BAA said of the protest: "This action is dangerous and highly irresponsible, not least because Aberdeen is one of Europe's busiest commercial heliports and a major transport centre for the north of Scotland, used by tens of thousands of people every day.

"There is no justification for this irresponsible action, which is deliberately calculated to delay and inconvenience the travelling public."

BAA added that flights are leaving but there is likely to be some knock-on disruption and passengers are advised to check the status of their flight early.