New York City comptroller and Democratic mayoral candidate Brad Lander was arrested by federal agents at an immigration court Tuesday after he linked arms with a person that authorities were attempting to detain.

A reporter with The Associated Press witnessed Lander’s arrest at a federal building in Manhattan. The person Lander was walking out of the courtroom was also arrested.

Lander had spent the morning observing immigration court hearings and told an AP reporter that he was there to “accompany” some immigrants out of the building.

In the moments before Lander was handcuffed, agents could be seen trying to physically separate Lander from the man they had come to detain. Lander briefly struggled to stay close to the detainee before he was pulled away. Video taken by journalists at the scene shows that agents struggled to separate Lander from the man he’d linked arms with for more than 40 seconds before wresting the two apart.

A video of the arrest captured by an AP reporter shows an agent telling Lander, “You’re obstructing.”

“I’m not obstructing, I’m standing right here in the hallway," Lander said as he was being handcuffed.

“You don’t have the authority to arrest U.S. citizens asking for a judicial warrant,” Lander said as he was led away down a hallway and into an elevator.

One of the officers who led Lander away wore a tactical vest labeled “federal agent.” Others were in plainclothes, with surgical masks over their faces.

At a press conference following the arrest, Lander’s wife, Meg Barnette, said “we were swarmed by a number of federal agents” after her husband linked arms with the man following his immigration court hearing.

“What I saw was shocking and unacceptable,” she said. “What I saw today was not the rule of law.”

The episode occurred as federal immigration officials are conducting large-scale arrests outside immigration courtrooms across the country. In many cases, immigrants are arrested after a judge grants a government request to dismiss their case, making them eligible for expedited removal.

“They remove any opportunity for due process,” Lander had told reporters earlier in the day after witnessing another person’s hearing.

Lander’s detainment comes a little more than a month after Newark, New Jersey, Mayor Ras Baraka was arrested on a trespassing charge outside a federal immigration detention center in his city.

The charge was later dropped by interim U.S. Attorney for New Jersey Alina Habba, and Baraka’s fellow Democrat, Rep. LaMonica McIver, was charged with assaulting and impeding federal agents stemming from her role at the same visit as the mayor. A federal indictment charges she grabbed, pushed and blocked officers from arresting the mayor. She’s denied the charges and said she plans to fight them. Baraka filed a federal lawsuit against Habba alleging false arrest and malicious prosecution.

A spokesperson for the FBI deferred comment to the Department of Homeland Security.

"No one is above the law, and if you lay a hand on a law enforcement officer, you will face consequences. New York City Comptroller Brad Lander was arrested for assaulting law enforcement and impeding a federal officer," DHS said in a post on X.

Lander is a candidate in the city's Democratic mayoral primary. Early voting in the contest is underway and the election is next week. Candidates in the race quickly weighed in to criticize the arrest.

“This is the latest example of the extreme thuggery of Trump’s ICE out of control — one can only imagine the fear families across our country feel when confronted with ICE,” said former Gov. Andrew Cuomo, who is running in the primary.

"This is bull****," Gov. Kathy Hochul wrote in a post on X.