When employees of a Des Moines Kmart store finally opened a red tin can that had been sitting on the customer service counter for four days, they got a $10,000 surprise.

The can contained $10,380 in assorted bills. Employees called police after opening the can Friday.

Police said the money was counted by a store manager, placed in envelopes according to denomination and then turned over to officers.

No note was found.

The store manager declined to identify himself and referred all questions to police. Telephone and e-mail messages left Monday for a Kmart spokeswoman were not immediately returned.

The investigation into where the money came from is continuing.