NEW YORK (AP) — A New York City high school senior was jailed Friday on a federal arson charge after authorities say he set a fire that severely burned a sleeping subway passenger.

Hiram Carrero, 18, was not required to enter a plea during his arraignment in Manhattan federal court. The fire early Monday morning is the latest in a string of incidents of people being lit ablaze on public transit across the U.S.

U.S. District Judge Valerie E. Caproni ordered Carrero detained, citing the 'heinousness of the crime,' after prosecutors appealed Magistrate Judge Robert W. Lehrburger’s decision to release him to home confinement under his mother’s supervision.

“It’s hard for me to understand why an 18-year-old young man who’s in high school is out at 3 o’clock in the morning setting people on fire,” Caproni said.

Carrero is accused in a criminal complaint of igniting a piece of paper and dropping it near the 56-year-old passenger around 3 a.m. Monday on a northbound 3 train at the 34th Street—Penn Station stop near Madison Square Garden and Macy’s flagship store in midtown Manhattan.

The passenger stumbled to the platform at the next station, 42nd Street—Times Square, with his legs and torso on fire, according to surveillance images included in Carrero’s criminal complaint. Police officers quickly extinguished the flames and the passenger was taken to a hospital, where he was listed in critical condition.

“The victim very well could have died in this case,” prosecutor Cameron Molis said.

Carrero was arrested Thursday in Harlem, where his lawyer said he lives with his disabled mother and acts as her primary caregiver, bringing her to medical appointments. She attended his arraignment but declined to speak to reporters.

According to the complaint, Carrero stepped onto the train only briefly, lit the fire and then fled the station while the passenger lay burning. He then took a bus home.

Carrero faces at least seven years in prison if convicted. A preliminary hearing is scheduled for Jan. 4, though that will be canceled if prosecutors bring the case to a grand jury and secure an indictment by then.

Last month, federal prosecutors in Chicago charged a man with pouring gasoline on a woman, chased her through a train car and setting her on fire. In December 2024, a woman asleep in a stopped subway train in Brooklyn was killed when a stranger set her clothing on fire.