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Investigation into deadly Metro incident

This photo provided by the National Transportation Safety Board shows damage from the arcing incident in the tunnel near L'Enfant Plaza Station Monday. (Courtesy NTSB)
This photo provided by the National Transportation Safety Board shows damage from the arcing incident in the tunnel near L’Enfant Plaza Station Monday. (Courtesy NTSB)
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This photo provided by the National Transportation Safety Board shows damage from the arcing incident in the tunnel near L'Enfant Plaza Station Monday. (Courtesy NTSB)
This photo provided by the National Transportation Safety Board shows damage from the arcing incident in the tunnel near L'Enfant Plaza Station Monday. (Courtesy NTSB)
Firefighters begin to remove cones from the scene after people were evacuated from a smoke filled Metro subway tunnel in Washington, Monday, Jan. 12, 2015. Metro officials say one of the busiest stations in downtown Washington has been evacuated because of smoke. Authorities say the source of the smoke is unknown. (AP Photo/Jacquelyn Martin)
A man with a tie that says "Police Line Do Not Cross" waits in a triage line after being evacuated from a smoke filled Metro subway tunnel in Washington, Monday, Jan. 12, 2015. Metro officials say one of the busiest stations in downtown Washington has been evacuated because of smoke.  Authorities say the source of the smoke is unknown.  (AP Photo/Jacquelyn Martin)
Officers secure the entrance to L’Enfant Plaza Station in Washington, Monday, Jan. 12, 2015, following an evacuation. Metro officials say one of the busiest stations in downtown Washington has been evacuated because of smoke. Authorities say the source of the smoke is unknown. (AP Photo/Manuel Balce Ceneta)
A firefighter sets up a triage area as people are evacuated from a smoke filled Metro subway tunnel in Washington, Monday, Jan. 12, 2015. Metro officials say one of the busiest stations in downtown Washington has been evacuated because of smoke.  Authorities say the source of the smoke is unknown.  (AP Photo/Jacquelyn Martin)
Metro Transit Police officers secure the entrance to  L’Enfant Plaza Station in Washington, Monday, Jan. 12, 2015. Metro officials say one of the busiest stations in downtown Washington has been evacuated because of smoke.  Authorities say the source of the smoke is unknown.   (AP Photo/Manuel Balce Ceneta)

A Metro train filled with smoke on Monday, Jan. 12, 2015. One person died. More than 80 people had to be taken to hospitals. The National Transportation Safety Board is investigating.

Colleen Kelleher

Colleen Kelleher is an award-winning journalist who has been with WTOP since 1996. Kelleher joined WTOP as the afternoon radio writer and night and weekend editor and made the move to WTOP.com in 2001. Now she works early mornings as the site's Senior Digital Editor.

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