KIEV , Dec. 2 - Naftogaz Ukrayiny has extended a contract for provision of legal services with Wikborg, Rein & Co. Advokatfirma DA ( Norway ), which provides support for arbitral proceedings on Naftogaz's suit against Russia 's Gazprom.

According to a state holding report in the ProZorro system, the corresponding document was signed on December 1.

The cost of procurement made under a negotiating procedure is EUR 6 million, the term of the contract is until the end of 2017.