A witness described the aftermath of the harrowing event, saying the woman appeared to be in an "awful lot of pain."

A person of interest is in custody in connection to a woman who was set on fire during a fight on a CTA Blue Line train overnight, according to Chicago police.

A 26-year-old woman was left in critical condition after being set on fire during an argument Monday night on a CTA Blue Line train, Chicago police said. About 9:25 p.m., the victim was involved

Around 4:30 a.m. Friday, the unidentified woman was hit near the Logan Square subway station, according to police.

A medical emergency is causing delays for commuters on the CTA Blue Line early Friday morning. According to the CTA, Blue Line trains are standing near Logan Square. It is not clear what caused the medical emergency. Shuttle buses are available to provide connecting service between Grand and Jefferson Park in both directions.

Commuters are facing some delays on Friday morning after some Blue Line trains were halted on the city’s Northwest Side due to a medical emergency. According to officials from the CTA, Blue Line trains are currently standing near the Logan Square due to a medical emergency.

Opinion: The Blue Line Corridor Coalition is bringing together public, private, and community partners to build on a rich legacy of Black excellence in Prince George’s County.

Crews work to replace track along a light rail line in the Twin Cities, in this undated file photo. The entire length of the Blue Line, and part of the Green Line, will be closed for nearly two weeks — starting Monday night — for maintenance.

Starting later this month, buses will be replacing the Blue Line train for two weeks, as well as a section of the Green Line in Minneapolis. According to Metro Transit, the replacement buses will be used starting Monday, Sept. 22, through Saturday, Oct. 4 ...

With the Toronto Maple Leafs struggling defensively, are there flaws in how the club's blue line was constructed?