Oil giant Exxon Mobil has said it is considering selling off 100 petrol stations in Scotland.
However, the company declined to comment on reports that it planned to dispose of its North Sea assets.
The Sunday Times said Exxon planned to sell its Scottish oil assets, which are worth about $2bn (£1.24bn).
An Exxon spokeswoman said the company did not comment on speculation but said the the firm intended to keep investing in the region.
Exxon and other oil companies, including BP and Royal Dutch Shell, have been selling assets in the North Sea in recent years, to focus more on other locations such as Angola and the Gulf of Mexico.
In September Exxon and Shell said they planned to sell their interest in the Corvette field platform in the North Sea.
On its Scottish petrol stations, Exxon said it was "testing a new business model" which would involve the group selling its Esso-owned retail sites to wholesalers but keeping the Esso brand and continuing to supply fuel.
The company spokeswoman said: "We are currently in the bidding process with a number of interested buyers."