Dec 23, 2020 / 04:57 PM EST
(CNN) At least 23 people were injured, nine critically, after a partial roof collapse and explosion Wednesday in downtown Baltimore, according to the fire department.
The incident occurred at the Baltimore Gas and Electric (BGE) building, according to a tweet from the Baltimore City Fire Department.
The incident is likely construction-related and not from natural gas, and occurred while crews were working on the building’s air handling and boiler system, a release from BGE says.
The building was largely empty because of the upcoming holiday and pandemic, according to the release, and the fire Department and BGE crews will continue investigating.