ST. LOUIS -- The FBI is hunting for a serial bank robber suspected in heists in eight states and whom the agency dubbed the "Bucket List Bandit" after he passed a note to a teller claiming he had only months to live.

The agency suspects the same paunchy man with thinning gray hair and a beard in nine robberies since June – the most recent two late last month in Columbia, Mo. and the St. Louis suburb of O'Fallon.

The man, aged 55 to 60, is also suspected in robberies in Colorado, Arizona, Idaho, Utah, North Carolina, Tennessee and Illinois.

The suspect is suspected of robbing a bank in Pocatello, Idaho, July 6, then later that same day in Roy, Utah, about two hours' drive away. It was during the Utah heist that he earned his nickname, passing a note to the teller announcing the robbery and offering an explanation for the crime.

"He told the teller, `I have four months to live,'" said Rebecca Wu of the FBI's St. Louis office.

Roy Police Sgt. Danny Hammon said the specific wording of the note wasn't known because the bandit took it back. It wasn't clear if the bandit wanted the money for medical care or for spending money during the course of his final few months of life.

No one has been hurt in any of the robberies and officials aren't saying how much money he's gotten away with. The robber has implied he had a weapon in some of the crimes, but has never shown one.

He was seen with a black compact sport utility vehicle, with a silver rack on top, after robberies in Winston-Salem, N.C., and Bloomington, Ill. Authorities are also searching for that vehicle.

The FBI will use digital billboards in the eight states where the bandit has struck to display images of the man in hopes of tracking him down, Wu said.

Serial bank robbers are not uncommon, but Wu said they generally strike within a regional area.

There are exceptions. Last year, a man dubbed the "Granddad Bandit" was sentenced to 25 years in prison for robbing 26 banks in 14 states. Michael Francis Mara, graying and balding, earned the nickname for his grandfatherly appearance. And, in fact, he is a grandfather.

Wu said Mara was caught after someone recognized him from a digital billboard.

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  • These surveillance photos provided by the Federal Bureau of Investigation's St. Louis Division shows a serial bank robber dubbed the Bucket List Bandit on, from left: June 21, June 27 and July 6, 2012. The FBI is using digital billboards around the country in the search for the man who is suspected of robberies in Missouri, Colorado, Arizona, Idaho, Utah, North Carolina, Tennessee and Illinois. He earned his nickname after he passed a note in one of the robberies claiming he had a short time to live. (AP Photo/FBI)

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  • EDS NOTE: IMAGE WAS ALTERED BY SOURCE - This surveillance image provided by the King County Sheriff's Office shows a man armed with an assault rifle grabbing money while robbing a Chase bank in North Bend, Wash., on July 6, 2012. The FBI says the man is the same suspect who robbed a bank Feb. 29, 2012 in Chino, Calif., during which the robber shot and wounded a police officer., and a March 12 bank robbery in Vacaville, Calif. He is known as the "AK-47 bandit" because he brandished an AK-style assault rifle during the three robberies to which he's linked. (AP Photo/King County Sheriff's Office)

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  • This July 15, 2010 security photo provided by the New York Police Department on Monday, July 19, 2010 shows a man police say robbed a bank armed with a bouquet of fresh flowers, in New York. Police say he reached into the arrangement and pulled out a note demanding $100 and $50 bills and warned, "Don't be a hero." He was given an undisclosed amount of cash before fleeing the Bank of Smithtown in the Chelsea neighborhood of Manhattan. (AP Photo/NYPD)

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