Mamdani had pledged to arrest Netanyahu during campaign for mayor and says he is consulting city’s legal advisers.

New York City Mayor Zohran Mamdani has said that he is consulting with city authorities over the possibility of arresting Israeli Prime Minister Benjamin Netanyahu if he visits the city for the United Nations General Assembly (UNGA) in September.

In an interview with The New York Times (NYT) released on Saturday, Mamdani reiterated his view that Netanyahu, who is the subject of an ICC arrest warrant for possible crimes against humanity in Gaza, must be brought to justice for the Israeli military’s actions in Gaza.

“I believe that Prime Minister Netanyahu belongs in the Hague,” Mamdani told The Interview, a show produced by the NYT.

“He’s a war criminal who has been charged by the International Criminal Court,” he added. “And what you will find is that is an opinion that is held by many, purely because of what his actions have wrought over these last many years.”

Mamdani, a democratic socialist who has emerged as an outspoken supporter of the Palestinian cause, pledged to arrest Netanyahu if he came to New York City during his mayoral campaign. Some questioned the feasibility of that promise.

The mayor said that he was in “active conversation” with the city’s law department about whether he has the authority to have Netanyahu arrested, should he travel to New York.

“Whatever the law allows me to do in New York City, that’s what we will do, but we won’t be writing our own laws to that end,” he said.

Asked about Mamdani’s call to have him arrested, Netanyahu told radio personality Sid Rosenberg that he thinks Mamdani secretly “hates America”.

Israel’s ambassador to the United Nations, Danny Danon, also insisted that Netanyahu will be at the UNGA meeting in New York this September, despite the threats of arrest.

During his campaign for mayor, Mamdani was the target of frequent Islamophobic vitriol and insults. Rosenberg referred to the New York mayor hopeful as a “cockroach”, before later apologising.

Mamdani’s election to mayor and his continued calls for accountability regarding Netanyahu point to a dramatic swing among Democratic voters away from Israel.

A poll in May found that nearly three-quarters of Democratic voters oppose US aid to Israel, up from 45 percent three years ago.

Nearly half of those surveyed said that their party was too supportive of Israel, whose war on Gaza has been termed a genocide by a growing number of human rights organisations, international officials, and scholars.

While that shift has yet to translate into concrete policy change at the top of the party, which includes stalwart supporters of Israel, many Democratic politicians have slowly begun to adjust their positions.

Nearly half of the Democratic members of the US House of Representatives voted to end US aid to Israel earlier this week, a measure of the shifting politics around the issue that commentators believe would have been unthinkable just several years ago.