No one was exposed and four people nearby at the time were decontaminated along with the area involved.
Around the same time, another envelope with something suspicious inside was found at Fundy Funeral Home on Westmorland Road.
That was taken away for analysis and again, no one was exposed.
Both Police and Fire believe they know the source of the envelopes.
Sgt. Jay Henderson of the City police tells us no one was hurt and they ask the public should they ever find a suspicious package to not open it but call police.
The Major Crime Unit is looking into the incident.