ROSEVILLE, MI (My TV20 News at 10) --- Roseville Police removed two soil samples last Friday taken from underneath a shed on Kelly Street.
Police sent them to Michigan State University to test for human remains.
The police chief announced Tuesday, the tests came back negative.
Police searched the property after an informant claimed he saw something buried there around the same time Hoffa vanished in 1975.
Police doubted Hoffa was buried there, but, believed any remains might be connected to another unsolved case.