Authorities issued a lookout Tuesday for a man they described as a serial bank robber responsible for two heists earlier this month in Cobb County.

Surveillance videos from the two robberies show the suspect sucking on a big blue lollipop in one, and talking on a cellphone in both.

The suspect robbed a Wells Fargo Bank branch at 5010 Floyd Road, Mableton, about 10:30 a.m. May 11, and a Regions Bank branch at 2048 Macland Crossing, Marietta, shortly before noon May 18, according to the FBI’s Atlanta office and the Cobb County Police Department.

In both robberies, the man presented a note demanding money to a teller, took an undisclosed amount of money and left the bank without further incident, authorities said.

The suspect is described as a slender black man in his late 20s to early 30s, standing 6 feet 2 inches to 6 feet 3 inches tall and weighing 180 pounds. He has black hair, possibly in twists or dreadlocks, and possibly a mustache.

In the first robbery, he was wearing an Atlanta Falcons stocking cap, a black jacket, black shorts and black tennis shoes with white stripes on top, and he had a big blue sucker in his mouth, authorities said.

In the second heist, the man was wearing a dark hat, silver-framed sunglasses, a white T-shirt, white shorts and white tennis shoes.

Anyone with information about the robberies is asked to contact Atlanta Crime Stoppers at 404-577-8477 (TIPS). A reward of up to $2,000 is offered through Crime Stoppers for information leading to the arrest and conviction of the suspect.