A male university employee reported a key missing after a breaking-and-entering incident Friday morning in the Natural Resources Building, MSU police Sgt. Florene McGlothian-Taylor said.The 53-year-old employee said he left his keys on top of a table in the lounge while he taught a class.When he returned, someone let him into the locked lounge, but his keys were missing. He later found the key ring, but realized one key was missing.McGlothian-Taylor said she did not know what the key unlocked.Police have no suspects and still are investigating, she said.