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Packages left at CU-Boulder frats and sororities were part of a scavenger hunt

Boulder Police said no threats were made and no arrests would be made in the case.

BOULDER, Colo — Police in Boulder, working with University of Colorado-Boulder's police department, said Tuesday that a series of packages left in front of student housing buildings on Monday were related to a scavenger hunt.

On Monday, residents of student housing on the CU-Boulder campus were warned by Boulder Police (BPD) about five reports of an unknown person taping a white envelope to the front doors of sorority and fraternity houses. 

The incidents happened around 1:30 a.m. Monday, police said. 

A news release from BPD on Monday said that each envelope included a CD that had audio and included scenes from the television show "Criminal Minds."

Police said they identified the people involved, and since the envelopes didn't have direct threats, they would not be making any arrests or filing criminal charges.

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