Norway’s Aker Energy said on Aug. 17 it would postpone submission of a development plan for its Pecan oilf ield off Ghana amid concern the project could face sanctions over the war in Ukraine due to the involvement of Russian oil firm Lukoil.

Aker Energy, controlled by Aker ASA, owns 50% in the deepwater block off Ghana where the Pecan field is located, while Lukoil holds 38%, Ghana National Petroleum Corp. has 10% and Fueltrade 2%.

The partners will not submit a development plan to Ghanaian authorities “until the challenges have been resolved,” Aker ASA CEO Oeyvind Eriksen told a call with analysts.

Russia invaded Ukraine in February in what it calls “a special military operation,” prompting unprecedented Western sanctions on Moscow and a breakup of economic relations.

“We are continuing a dialogue with Lukoil and Ghanaian authorities about possible solutions,” Eriksen told Reuters, adding that one option was for Lukoil to divest from the project.

Aker said Ghanaian authorities have extended a deadline to submit the plan until Sept. 30.