Prosecutors charged a 26-year-old man with breaking and entering after some urine samples went missing from a medical facility in Grand Blanc Township, about 45 miles northwest of Detroit.
The Flint Journal reported Thursday officers followed footprints back to the Swartz Creek man and two urine samples in a nearby backpack.
Authorities said the man's friend had given the samples for a job at a hospital but worried about failing a drug test, so he asked his pal to steal them back.
Prosecutor David Leyton said the charged man is "a really good friend."
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Information from: The Flint Journal, http://www.mlive.com/flint
