First Quantum (FM.TO) CEO Tristan Pascall flew to Panama over Christmas to attend the meeting in person with the minister, Federico Alfaro, according to the source, who said further talks are planned.

The commerce and industry ministry did not immediately reply to a request for comment.

A spokesperson for First Quantum declined to comment.

The government and the mining company have been discussing a deal that would have increased annual tax payments to Panama to at least $375 million.

The Panamanian government ordered the firm to halt operations at the Cobre Panama mine after they both missed a deadline to reach an agreement.

The firm started arbitration proceedings against the government days after, according to local authorities.

A government official said last week the country was looking for a "fair" deal.

The mine accounts for roughly 3.5% of Panama's gross domestic product, according to government figures.