NORCROSS, Ga. (11Alive) -- Police said the Wells Fargo bank branch near Jimmy Carter Boulevard and Buford Highway was robbed Tuesday morning.
Investigators said a single suspect used a note and what appeared to be a hand grenade to demand money before escaping at about 9:15 a.m.
The suspect was described as a well-dressed black male, dark skinned, very tall -- about 6-foot-5 -- with a thin build. In Tuesday's robbery, the suspect wore a black button-up shirt, blue jeans, sunglasses and a straw fedora.
The FBI says they believe the same suspect was involved in two other bank robberies at Wells Fargo branches over the past week -- one in Doraville and the other in Buckhead.
Authorities say the suspect produced a grenade during the Buckhead robbery but didn't produce one during the robbery in Doraville. The FBI even released photos showing the suspect handling a grenade during his confrontation with the bank teller.
No injuries were reported in Tuesday's robbery.
The FBI says Wells Fargo is offering a $5,000 reward for information leading to the arrest and conviction of the suspect.
Anyone with any information is asked to contact detectives with the Gwinnett County Police Robbery Unit at 770-513-5300, to call Crime Stoppers Atlanta at 404-577-TIPS (8477).