Venezuela's Foreign Minister Delcy Rodriguez addresses the media during a news conference in Caracas. Photo: Reuters

Exxon last month said it found oil off Guyana's coast, spurring complaints from Caracas that Guyana is unfairly exploiting a disputed territory that must be negotiated through a mechanism created via a 1966 treaty signed in Geneva.

"Until there is a resolution of the issue of territorial reclamation ... there can be no unilateral use of these waters," Foreign Minister Delcy Rodriguez said in televised comments.

"The new government of Guyana shows a dangerous political provocation against a peaceful Venezuela, supported by the imperial power of an American transnational, Exxon Mobil," she said, referring to Guyanese authorities elected in May.

Exxon has said it has no comment on the bilateral dispute.

The sparsely populated and dense jungle area known as the Essequibo encompasses an area equivalent to around two-thirds of Guyanese territory. It functions in practice as part of Guyana and shows no discernable trace of Venezuelan influence.

Guyana says Caracas agreed to relinquish the Essequibo following a ruling by an international tribunal in 1899, but that Venezuela later backtracked on that decision.

Venezuela says the 1899 ruling was unfair and insists the territory is still in dispute. Maps in Venezuela usually describe the Essequibo as the "reclamation zone."

(Reporting by Girish Gupta; Writing by Brian Ellsworth; Editing by Richard Chang)