According to the fire department, at least 23 people were injured, nine of them seriously, after a partial roof collapse and an explosion in downtown Baltimore on Wednesday.
The incident took place in the Baltimore Gas and Electric (BGE) building, according to a tweet from the Baltimore City Fire Department.
21 people were admitted to hospital and two people refused treatment. Nine people were in critical condition and one person was in serious condition, the fire department said.
The incident is likely construction related and not natural gas related. It happened while the crews were working on the building’s air treatment and boiler system, according to a statement from BGE.
A witness told CNN subsidiary WJZ that the ground was shaken.
“I passed the Radisson (hotel) on this side of the street and the glass on the building was shaking and it was booming,” added Roger Lewis. “And I didn’t know what it was. And we saw rubble falling across the street over there. “
The building has been mostly empty due to the upcoming holidays and pandemics, according to the release, and the fire department and BGE crews will continue the investigation.
According to BGE, the window washing frame was compromised and a window washing team was brought to safety by the fire brigade.
The official cause is currently unknown, according to a tweet from the fire department.