A Washington metro station was shut down on Monday after reports of smoke underground. The incident resulted in 84 people being hospitalized, and one patient dying, according to the D.C. fire department.
L'Enfant Plaza Metro was evacuated and is closed "for smoke," according to a press statement from the Washington Metropolitan Area Transit Authority. The WMATA spokesperson told the local CBS affiliate that the smoke resulted from an electrical malfunction.
Green and Yellow line service has been suspended downtown, WMATA tweeted.
At 4 p.m. a Washington firefighters association tweeted that a "mass casualty incident" had been declared at the Metro station. The group defined "mass casualty" as "a term utilized when additional resources are potentially necessary on large-scale incidents."
A fire department source told a Washingtonian reporter the "mass casualty" declaration is standard procedure when a group of more than 12 people are exposed to smoke inhalation.
The Washington Post has some harrowing first-person accounts of smoke seeping into Metro cars on the Yellow Line in the tunnel just past L'Enfant. Metro passenger Jonathan Rogers tweeted a series of photos of a smoke-filled car, calling the experience "easily the worst metro ride of my life."