Mr Trump visited St Andrews on a trip to Scotland

The Scottish Greens say new documents suggest that one meeting had been set up to discuss Mr Trump's proposals for a �300m golf resort in Aberdeenshire.

Green MSP Patrick Harvie, who has written to Mr McConnell on the issue, said any discussion of the project would breach the ministerial code.

Mr McConnell's spokesman said nothing inappropriate had been discussed.

Mr Trump wants to build a world class golfing centre at the Menie Estate in Aberdeenshire.

It's the discussion of the project itself, which ultimately will be the subject of a planning decision, which breaches the code Patrick Harvie Green MSP

The plans would include two championship courses, a hotel and a holiday home complex.

It has been predicted that the development could bring �150m to the local economy over the next decade and create 400 jobs.

However, fears have been voiced over its impact on the unspoilt area of coastline.

Last month the Greens raised questions about what had been discussed on the two occasions Mr McConnell and Mr Trump met in the US.

The party said documents had now been released which suggested that the objective of one meeting was to "discuss Mr Trump's proposals for entry into the UK golf resort market via a project in Aberdeenshire".

Independent body

The ministerial code states that they must do nothing which might be seen as prejudicial to the planning process, particularly before a decision is taken.

Mr Harvie has now written to Mr McConnell asking him to confirm or deny the objective for the meeting and say whether the golf project was discussed.

He also wants the matter to be referred to an independent body to be investigated.

Mr McConnell and Mr Trump have both said previously there was nothing inappropriate and that these claims of ministerial breach are nonsense First minister's spokesman

Mr Harvie said: "This looks to me to be a clear breach of the ministerial code.

"The first minister's denials are vacuous. To deny discussing a planning application before one exists is utterly meaningless.

"It's the discussion of the project itself, which ultimately will be the subject of a planning decision, which breaches the code."

However, a spokesman for Mr McConnell said: "The first minister met Donald Trump as part of a series of meetings in the US to encourage investment in Scotland and met a number of companies.

"Nothing inappropriate was discussed.