Two studies performed at the historic David W. Dyer courthouse in downtown Miami show there are significant mold and air safety issues at one of Miami-Dade County’s oldest courthouses and suggest that some parts of the building are beyond repair.

The studies, which were obtained by the Daily Business Review, were commissioned by the U.S. District Court of the Southern District of Florida after former Magistrate Judge Ted Klein became ill and died last year of a mysterious respiratory illness, and his fellow magistrate judges raised concerns about the building’s environment.