"One of the pills must have gotten crushed in the delivery and some of the powder residue spilled out upon delivery" to the commissioner's office, Delaney added.
Police department staff called the Springfield fire department to check the powder that had spilled out.
"The envelope was opened and it did in fact contain K-9 Supplements," Delaney said.
Those working near the package were moved, but the police station remained open, with dispatchers still working on the first floor.
A portion of Pearl Street near the police station, was blocked off while crews investigated, but that section of roadway has since reopened.
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