US Secretary of State Mike Pompeo on Wednesday backed calls for a ceasefire in Libya, urging the warring parties to keep out Russian influence and preserve the country's oil, AFP reports.

"Quick and in-good-faith negotiations are now required to implement a ceasefire and relaunch the UN-led intra-Libyan political talks," Pompeo told reporters, shortly after European leaders also backed a truce.

"It's time for all Libyans on all sides to act so that neither Russia nor any other country can interfere in Libya's sovereignty for its own gain," he said.

"Putting Libya on the path to economic recovery means preserving Libyan oil facilities."