Metro Transit police say they responded to the scene shortly before 7 a.m.
The victim was taken to a local medical facility for treatment.
Metro Transit police say they’re investigating the incident, as is the FBI.
Trains are currently “single-tracking” between Friendship Heights and Van Ness stations.
The FBI has released this statement regarding the incident:
The FBI is reviewing an Agent-Involved-Shooting which occurred earlier this morning aboard a Red Line train near Medical Center, Montgomery County, Maryland. One individual was wounded and since transported to a local area hospital for medical assistance.
The FBI takes all shooting incidents involving our agents seriously. In accordance with FBI policy, the shooting incident is under investigation by the FBI’s Inspection Division. The review process is thorough and objective and is conducted as expeditiously as possible under the circumstances. As this remains an on-going matter, the FBI has no further comment.