National joint-stock company (NJSC) Naftogaz Ukrainy's debt on loans issued by state-owned Oschadbank amounts to UAH 20 billion, Oschadbank Governor Andriy Pyshny told reporters on Monday.

"[It's] UAH 20 billion," he said when asked about the size of the debt by journalists.

According to him, the settlement of the debt is being negotiated on now.

"Everybody is working on that. This is a complex issue. This issue is related to the implementation of a large-scale energy sector reform program… This is a question that needs clear and understandable answers. It requires a package of measures to be taken by the government, the NJSC and the parliament," he said.