Police say a transient man who stayed at the Sheldon Motel in northwest Iowa left behind a surprising mystery — $263,000.

The Sioux County sheriff's office was called to the motel on March 31st to investigate the death of John Grant, who lived there five months of the year.

They found two vinyl cassette tape cases with $263,000, most of it in $50 and $100 bills.

Authorities say there's no reason to believe Grant got the money illegally, so it should go to his next-of-kin.

The sheriff's office is waiting to hear back from Sioux County Attorney Coleman McAllister, who may have found a brother and a couple of first cousins.