Ukraine's SBU security service said on Saturday it had uncovered a corruption scheme in the purchase of arms by the country's military totaling the equivalent of about $40 million.

The announcement of mass procurement fraud, confirmed by Ukraine's Defence Ministry, will have a huge resonance in a country beleaguered by Russia's nearly 2-year-old invasion.

The fight to root out endemic corruption remains a major issue as Ukraine presses its bid to secure membership of the European Union.