The option is exercisable at any time until Jan 4, 2008 and extendable until Jan 31, 2008, the company said.
Uzbekistan-based private company Zeromax currently holds 57 million shares or 15.60% in the company and, if Zeromax exercises the option in full, its shareholding in the company would increase to 109.25 million shares or 29.90%.
