CLEVELAND -- U.S. Marshals know the many faces of "Bobbie Thompson" but don't know his real name. They are circulating pictures of Thompson over the years as his appearance changed and are hoping someone recognizes him.

They have him in custody after tracking him down in Portland, Oregon last weekend.

Marshals say someone out there knows the true identity of "Bobby Thompson" andare asking forhelp to identify this individual who was one of Americas most wanted fugitives but whose true identity still remains a mystery.

Thompson has refused to reveal his true identity and both national and local searches conducted on his fingerprints have yielded negative results.

When Marshals were handcuffing him, he told them, "It's my right under the U.S. Constitution not to make any statements."

Those are the last words he has spoken, according to Pete Elliott, the United States Marshal for the Northern District of Ohio.

On his booking sheets, "Thompson" has signed by making an X.

Anyone with information regarding the true identity of this fugitive is encouraged to contact the U.S. Marshals Service at: 1-866-4-WANTED or text the keyword WANTED and the tip to 847411(tip411).

Tipsters may remain anonymous and a cash reward may be available.

"Bobby Thompson" is one of his aliases and hehas been on the run for the last two years after being accused of stealing millions of dollars that had been donated to the charity he founded, the Navy Veterans Association.

Over the six- month investigation, numerous leads were followed as investigators from Ohio tracked "Thompson" through multiple states including Massachusetts, Arizona, New Mexico, Rhode Island, West Virginia, Indiana, Florida and Washington.

He is charged with unlawful flight to avoid prosecution, identity theft, fraud, money laundering andis currently being held in the Cuyahoga County Jail.

When "Thompson" was arrested by Deputy U.S. Marshals, he was in possession of a number of fictitious identifications from both the United States and Canada.

After his arrest, a search of a near-by storage facility that had been rented under one of his fictitious names produced numerous birth certificates and nearly $1 million in cash.