A second class-action lawsuit is being filed over the alleged hazardous conditions at the Roderick Ireland Courthouse in Springfield.
The first complaint was filed in state superior court, while the newest lawsuit is federal.
The Massachusetts Trial Court closed the building and ordered a mold remediation effort after the Hampden District Attorney and other departments evacuated staff last month due to health concerns.
The D.A. is among those boycotting a return to the courthouse after its re-opening.
MassLive reports the Springfield courthouse is only handling critical matters right now, and that other cases are either being sent to other local courthouses or taking place remotely.