(KAIR)--A suspicious substance found in an envelope addressed to St. Joseph, Missouri Mayor Bill McMurray, has been identified as human ashes.

KQ2-TV, citing Buchanan County Emergency Manager Bill Brinton, reports the ashes are those of a former city employee who wanted their remains spread near City Hall.

The discovery of the envelope late Monday morning led to the closing of a portion of City Hall, and a response from emergency crews.

The envelope was discovered around 11:00 by an employee in the City’s finance department who was sorting through the morning mail.