The Finance Ministry said Monday that it had not yet received a $73.3 million coupon payment on a $3 billion Eurobond from Ukraine that Kiev said it had paid on Friday.
"Unfortunately, we cannot confirm as of now the receipt of the coupon payment," the ministry's press service said.
"However, the terms of the bond provide for a 10-day grace period. We expect that the government of Ukraine will fulfill its obligations to pay the coupon during this period."
Russia bought the eurobond in December under a financial aid package agreed with Ukraine's then-President Viktor Yanukovych, who was later ousted and replaced by a government much less sympathetic to Russia.