Casper police identified white powder found in an envelope addressed to the Casper Star-Tribune as cocaine.
It was roughly one half of a tablespoon, on a dollar bill.
There was not a letter in the envelope and Casper police Lt. Chris Walsh said officers do not believe at this time that it was meant as a threat.
The letter was sent to the Star-Tribune in care of an employee. Walsh does not suspect the employee of anything criminal.