As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FLIGHT CREW DIVERTED, DUE TO REPORTS OF DEBRIS ON DEPARTURE RUNWAY OUT OF MSP WHICH "MAY HAVE COME OFF OF OUR JET". DEBRIS IDENTIFIED AS ACOUSTICAL LINER AND ACFT WAS THE LAST TO DEPART. MX FOUND ACOUSTIC MATERIAL MISSING ON THE NR1 ENGINE THRUST REVERSER. UPPER REVERSER HALF REPLACED.