Maryland State Police are investigating two explosive devices that injured at least two employees in Annapolis and Hanover state buildings on Jan. 6.

Annapolis fire crews responded shortly before 1 p.m. to an incident at the Jeffrey building on Francis Street, where an unidentified mailroom employee sustained minor burns to his fingers after opening a package, Annapolis City spokesman Phillip McGowan told the AFRO.

The Jeffrey building is adjacent to the Maryland State House and accepts packages sent to the Governorโ€™s Office. Annapolis Mayor Joshua Cohen has informed state employees not to open mail packages until further notice.

State Police officials said in a statement the suspicious box was the size of a book and when opened, triggered a reaction involving โ€œsmoke and a sulfur-like smell.โ€
Employees in the building were evacuated but re-entered at 2:30 p.m.

At roughly the same time, another explosive device was reported in a mailroom at the Maryland Department of Transportation at 7201 Corporate Center Drive in Hanover after an employee opened a package that sparked a similar reaction.

The FBI, Maryland Transportation Police and State Fire Marshallโ€™s Office are also investigating the incidents.