Spain's Court of Auditors said on Wednesday it has slapped the far-right Vox party with a fine of more than 860,000 euros for accepting anonymous cash donations.
The court said a review of the party's annual accounts for 2018, 2019 and 2020 shows Vox "received or accepted unidentified donations in cash" during this period, calling it a "very serious breach" of the country's party financing laws.
In response, it said it fined Vox 862,496.72 euros ($979,000), a move the party said it would appeal.
Vox called the ruling "unjust", saying in a statement that "on other occasions the Court of Auditors has closed identical cases".
Founded in 2013 by former members of the mainstream conservative Popular Party, Vox is anti-Muslim, nationalist, anti-feminist, Eurosceptic, socially conservative and economically liberal.
It has been the third-largest party in Spain's parliament since 2019 but has never held power at the national level.