A British minister denied on Wednesday media reports that the government could end up paying billions of pounds more to Mauritius under a renegotiated deal to retain a U.S.-British military base on Diego Garcia in the Indian Ocean.

The UK government has denied claims made by the prime minister of Mauritius that it faces paying billions more under a renegotiated deal over the future of the Chagos Islands.

The UK government said it wouldn’t provide any details on a proposed multibillion-pound deal to continue operating a military base in the Chagos archipelago once it cedes control of the islands until it’s finalized,