Police detain Nerdeen Kiswani, an organizer of pro-Palestinian demonstration group "Within Our Lifetime" during a protest on Friday, April 12, 2024, in New York. Yuki Iwamura/AP hide caption

Yuki Iwamura/AP

NEW YORK — A man accused of planning to firebomb the home of a prominent Palestinian activist has been arrested following a weekslong undercover operation led by the New York City Police Department, officials said Friday.

The target of the plot was Nerdeen Kiswani, who frequently leads protests in New York against Israel and the war in Gaza through the organization Within Our Lifetime.

Kiswani, 31, said law enforcement officials informed her late Thursday that they had disrupted "a threat on my life that was about to take place."

Federal authorities said they arrested Alexander Heifler on Thursday at his home in Hoboken, New Jersey, as he was assembling Molotov cocktails that he planned to throw at Kiswani's home.…