Frontera Energy and partner CGX Energy vowed to defend their remaining interests in Guyana after the government said their exploration license had terminated. The companies in a joint statement said they remained firmly of the view that their interests in the Corentyne block remains in place and in good standing and that a petroleum agreement hasn't been terminated.

Frontera Energy (OTCPK:FECCF) and partner CGX Energy (OTCPK:CGXEF) said Tuesday the Guyana government terminated their exploration license for the Corentyne block. While the companies did not disclose the reason for the cancellation,