Federal and local law enforcement authorities arrested a New Jersey man Thursday after disrupting his alleged plot to firebomb the home of Palestinian activist Nerdeen Kiswani in Brooklyn.

Andrew Heifler was taken into custody as he assembled Molotov cocktails at his Hoboken residence, according to a federal criminal complaint. Heifler faces two federal firearms charges in connection with the planned attack on Kiswani, the 31-year-old co-founder of the pro-Palestinian group Within Our Lifetime.

The arrest followed a weeks-long undercover operation conducted jointly by the FBI and New York Police Department. According to court documents, Heifler first discussed his intentions during a February video call that included an undercover law enforcement officer, expressing interest in training for "self-defense" and wanting space to practice with Molotov cocktails.

Over the following weeks, Heifler met repeatedly with the undercover officer to plan the attack. On March 4, the two conducted surveillance at Kiswani's residence, with Heifler discussing plans to throw a dozen Molotov cocktails at both the home and nearby parked cars. Heifler also told the undercover officer he planned to flee the country after the attack, initially targeting late April but later pushing the timeline to mid-May.

During Thursday's operation, authorities recovered eight completed Molotov cocktails from Heifler's residence. FBI bomb technicians confirmed the devices contained ethanol and classified them as destructive devices. Heifler was found in possession of Everclear, a high-proof alcohol, along with other components for making the incendiary devices.

Kiswani said she received a call from FBI officials late Thursday informing her that "a threat on my life was about to take place" and that authorities had apprehended the suspect. She described feeling "shell-shocked" by the news but said such threats were "a constant possibility for people who speak up on behalf of Palestine."