BUCHAREST, Romania (AP) — The hard-right nationalist who lost Romania’s presidential election rerun said Tuesday he has asked a top court to annul the election results, alleging that foreign interference and coordinated manipulation affected Sunday’s vote.

George Simion, the 38-year-old leader of the hard-right Alliance for the Unity of Romanians had conceded defeat after losing in the runoff to Nicusor Dan, the Bucharest mayor who obtained 53.6% of the vote, a margin of more than 829,000 votes.

Simion said in a statement he has filed a request to Romania’s Constitutional Court to annul the vote, claiming he had “irrefutable evidence” that France, Moldova and “other actors” meddled in the ballot, but did not present any evidence. He also alleged that “deceased people” had participated in the vote.