Catherine Almonte Da Costa (R) speaks during a press conference with New York City Mayor-elect Zohran Mamdani on December 17, 2025

Catherine Almonte Da Costa (R) speaks during a press conference with New York City Mayor-elect Zohran Mamdani on December 17, 2025

An official appointed by incoming New York mayor Zohran Mamdani to a senior role in his transition team resigned one day later on Thursday after past antisemitic posts on social media emerged, US media reported.

The Muslim mayor-elect faced repeated accusations of antisemitism during the mayoral campaign over his strident support for the Palestinian cause and conservative figures have vowed to closely scrutinize his administration when he takes office on January 1.

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