NEW YORK (AP) — New York City comptroller and Democratic mayoral candidate Brad Lander was arrested by federal agents at an immigration court Tuesday as he was trying to accompany a person out of a courtroom.

The episode occurred as federal immigration officials are conducting large-scale arrests outside immigration courtrooms across the country.

City comptroller and mayoral candidate Brad Lander was arrested by ICE agents Tuesday in a chaotic scene outside a federal immigration court, his mayoral campaign confirmed. A video of his arrest has surfaced which shows Lander repeatedly demanding to see a judicial warrant for a man being hauled away by immigration agents.