DC Fire and EMS personnel were called to the 1700 block of Columbia Road NW, where there was elevated levels of CO reported in a multi-story building, though the source remains unclear.
As of 11:30 a.m. on March 13, officials said that two apartments were alerted to the incident and certain residents were evacuated as a precaution "where necessary."
There were no reported injuries or illnesses.
Crews were still working to search for the source of the leak while ventilating the impacted units.
This is a developing story. Check Daily Voice for updates.
Want breaking news in the DMV as it happens, or want to contribute? Join the DMV All Incidents Facebook group.
Click here to follow Daily Voice Bowie and receive free news updates.