"When someone is charged with an International Criminal Court (ICC) warrant, it's something that should be taken seriously," he added.

Mamdani said his administration would act in accordance with "all applicable local laws."

Responding to questions about a proposed meeting between New York City's Commissioner for International Affairs, Ana Maria Archila, and Iran's ambassador to the United Nations, Mamdani said the meeting would not take place.

"Our administration did not reach out to the prime minister of Iran . Our administration received a request from the Iranian consulate."

His comments followed remarks in a podcast interview in which he said his administration was reviewing how it would respond if Netanyahu visited New York for the UN General Assembly.

The remarks prompted responses from the Israeli Prime Minister's Office and US President Donald Trump.

"ICC is a kangaroo court that has no jurisdiction over Americans or Israelis. Its bogus arrest warrant against Prime Minister Netanyahu," a statement from the Israeli Prime Minister's Office read.

Trump said Netanyahu "will not be arrested in any way, shape, or form while in the United States of America", without mentioning Mamdani in a Truth Social post.