The career criminal who set a woman aflame on a Chicago Transit Authority Blue Line train Monday night is facing federal terrorism charges as authorities investigate his possible connection to a suspicious fire at City Hall a few days earlier, authorities said.

Lawrence Reed, 50, remains in custody on a charge of committing a terrorist attack on a mass transit system for allegedly dousing a 26-year-old commuter with an accelerant and setting her ablaze after the pair got in a heated argument while aboard a CTA train.

The unidentified victim remains in critical condition at Stroger Hospital.

The alleged fire attack is just the latest in a decades-long string of criminality for Reed, who has been let off with slaps on the wrist again and again despite a massive rap sheet.

He has 22 prior arrests since 2016 alone, and 53 criminal cases in Cook County dating back to 1993 — nine of them felonies for which he pleaded guilty. But he’s only served time twice, spending a paltry total of two-and-a-half years behind bars, according to CWB Chicago. 

According to court records viewed by the outlet, Reed was released with an electronic ankle monitor in August after knocking a social worker out cold at a psychiatric hospital where he had been committed, leaving her with “likely optic nerve damage and a concussion, causing her to experience memory issues, headaches, and daily nausea,” a detention petition viewed by the outlet read in part. 

Prosecutors asked Reed to remain locked up, but a judge overruled them, leaving him free to roam the streets.

Despite a court clerk’s note saying Reed should be monitored “24/7” upon release, the judge signed a separate document showing she was allowing him to leave his home between 6 a.m. and 2 p.m. on weekdays.

Three weeks later, a different judge altered the monitoring conditions to allow him to be outside of the home for some daylight hours on Tuesdays, Saturdays and Sundays, the outlet writes.

In another alarming twist, cops are now looking into whether the same firebug was responsible for a blaze that broke out at City Hall on Friday, ABC 7 reported.

A person spotted in surveillance footage bears a similarity to the alleged attacker, and detectives are now seeking higher-quality video to help determine whether the same person was responsible for both incidents, a source told the outlet.

Monday’s fiery assault came just a week after a 27-year-old woman was stabbed in the chest by a deranged knife-wielding man as she sat on a bench at the UIC-Halsted Blue Line platform near the University of Illinois Chicago on Nov. 10, according to police.

The thug fled at the next station stop and has not been apprehended.

The horrific back-to-back attacks on the city’s public transit system in recent days have stoked fear in some riders, who say CTA has gotten sketchier over the past few years.

“That’s an absolutely horrible thing to have happened on the L. But I have to say, the past three or four years, the L has not been a pleasant experience, and it’s a dangerous experience, at worst,” straphanger Tarick Loutf told the outlet.

“The CTA has been working closely with the Chicago Police Department and the Public Transportation Unit detectives embedded at the Strategic Decision Support Center dedicated to CTA to support their investigation, which has now led to the arrest of a person of interest,” the transit agency said in a statement.