(FOXNEWS) — Criminal investigators looking into the suspicious circumstances behind a now-withdrawn claim for a $14.3 million Iowa Lottery jackpot will have numerous layers of complexity to unravel, stretching from a wealthy New York suburb to Central America, observers said Friday.

The Iowa Division of Criminal Investigation said it was examining whether a crime was committed related to the purchase and presentation of the Hot Lotto ticket. But Dave Button, who leads the agency’s gaming bureau, acknowledged investigators may have no way to compel the man who may have the answers — a 76-year-old New York lawyer — to give them up.

Crawford Shaw of Bedford, N.Y., withdrew his claim for the jackpot Thursday after refusing for weeks to tell the Lottery the identity of the person who bought the ticket and anyone else who possessed it before he did. He said he didn’t know the ticket owner, who wished to remain anonymous. After the Lottery rejected his lawyers’ last-minute offer to give the money away to charity, he withdrew the claim “to avoid further controversy.”

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