Hungarian President Katalin Novak has resigned following outrage over a decision to pardon a man implicated in a child sexual abuse case.

Ms Novak, a close ally of Hungary’s conservative prime minister Viktor Orban, pardoned some two dozen people in April 2023, among them the deputy director of the children’s home, who helped the institution’s former director hide his crimes.

“I made a mistake ... Today is the last day that I address you as a president,” Ms Novak said as she announced her resignation in a speech broadcast on state television.

“I made a decision to grant a pardon last April believing that the convict did not abuse the vulnerability of children whom he had overseen. I made a mistake as the pardon and the lack of reasoning was suitable to trigger doubts over the zero tolerance that applies to paedophilia,” she said.

Ms Novak, a former minister for family policy, became the first woman to hold the largely ceremonial role of president in March 2022.

Since the independent news site 444 revealed the controversial pardon decision last week, the country’s opposition has been calling for Ms Novak’s resignation.

On Friday, a thousand demonstrators rallied at Ms Novak’s office calling for her to quit.

In a bid to contain the political damage, Mr Orban, whose Fidesz party is beginning the campaign for European Parliament elections in June, submitted a constitutional amendment to parliament late on Thursday depriving the president of the right to pardon crimes committed against children.

On Saturday, Mr Orban’s former Justice Minister Judit Varga, who was expected to lead Fidesz’s list for the elections, and who also signed off on the pardon, said on Facebook she would step down as an MP, taking responsibility for the decision.