Bowleven has confirmed that the deadline for completing a $250 million (£155m) stake sale in Cameroon has been extended a second time, pending approval of the deal by the president.

The Edinburgh-based oil and gas firm said the parties to the deal, Cameroon's New Age and Russia's LUKOIL, have signed the extension of the Etinde farm-out transaction longstop date to December 31, 2014, from October 31.

On Monday Bowleven said the parties were progressing the extension. The deadline had been moved from August 31.