A man dubbed the "Granddad Bandit," suspected in more than a dozen robberies, struck again this week, the FBI said Friday.
The latest incident was Wednesday in Huntsville, Alabama, the FBI said in a release. It offered no further details.
Authorities suspect the Granddad Bandit in 18 other robberies in a dozen states. The FBI said last year that he is a white male, believed to be 50 to 60 years old. He is about 6 feet tall and weighs between 210 and 230 pounds.
On Friday, the FBI said that he may be driving a black four-door Ford F150 or F250 pickup with an Alabama license plate.
"Typically, the man enters the victim bank, approaches the teller counter and hands the teller a note demanding money. During some of the robberies, he has threatened to have a weapon," the bureau said.
Authorities are using electronic billboards in 10 states to try to catch the bandit. The FBI said the billboards -- there are about 75 of them -- will be updated to include a photograph of the vehicle.