Police Sgt. Vince Lewis says the theft occurred Tuesday night at the Talking Stick Resort Arena in downtown Phoenix, where the men were performing.
Drake has been co-headlining his “Summer Sixteen” concert Tour with fellow rapper Future. Future the Prince is Drake’s official DJ.
According to investigators, a suspect entered the bus between 10 p.m. and 10:15 p.m. and removed a briefcase containing the jewelry.
Lewis says police do not disclose the identities of burglary victims but confirmed the jewelry did not belong to the “Hotline Bling” rapper.
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The investigation remains ongoing.
Representatives for Drake did not immediately respond to requests for comment Wednesday. Contact information for Future the Prince was not immediately available.