Mike Teke CEO of Optimum Coal. Photo: Leon Nicholas.

Shares in South African miner Optimum Coal soared six percent higher in early trading on Friday after the company confirmed reports that unnamed third parties were interested in buying out the firm.

Its share price at 09:05 SA time was 31.80 rand, its highest in about four months, according to Thomson Reuters' data. On Thursday, sources close to the deal said commodities trader Glencore was eyeing the miner. - Reuters