On the Sudbury Street side. Mike Saccone reports one worker is dead. Other workers are accounted for. Roads around the area are shut. Video of the scene.
"We saw multiple floors come down," Emily Maher of WCVB reports.
The garage was in the process of being torn down for a new building as part of HYM's Bulfinch Crossing project.
The T had already shut Haymarket station and was running substitute bus service, to allow for the weekend demolition work.