The Baltimore Office of Emergency Management said a person was struck and trapped underneath an MTA Metro subway train late Tuesday afternoon.
Emergency crews responded to the Charles Center Station shortly before 5 p.m. for reports of a person who was struck then trapped underneath a subway car on the train tracks.
Crews were able to extricate the man in about 30 minutes.
The victim was taken to a local hospital where they are listed in serious condition, fire officials said.
The Officer of Emergency Management said that two lanes of East Baltimore Street are blocked at Charles Street due to emergency apparatus.
The MTA said there is a bus bridge in place on the Metro between Johns Hopkins and State Center. The Metro is also operating on a 20-minute delay with a single track.