(WSB Radio) -- He strikes just before noon.

Or are there six different men who simply look similar?

Seven banks from northwest Atlanta to Dunwoody describe this lunchtime bandit striking often just before noon, wearing a variety of baseball caps pulled low on his face, making off with untold amounts of cash, and eventually driving away in a burgundy or maroon Chevrolet Tahoe missing a rear hub cap.

Or maybe seven different guys with uncanny resemblance have managed to pull separate bank heists -- twice at the same bank, and three out of the last four Fridays -- and escaped in eerily similar getaway SUVs.

Federal and local authorities and area bank security officials are calling this mystery suspect a serial bank robber.

"It's very plausible that if he's hitting one bank (in an area), he could be responsible for others nearby," FBI spokesman Special Agent Stephen Emmett told the Atlanta Journal Constitution.

The man's M.O. changes slightly from one incident to the next. He usually strikes at or just before noon, but there have been afternoon and early morning robberies. He shows no obvious appearance of a weapon to reinforce the demand for money, but he has appeared on occasion to have shoved his hand into his pocket, creating the facade of an armed robbery.

Sometimes he uses a demand note, sometimes not.

Sunglasses, or ball cap pulled down low, never looking up to the camera.

A reward of up to $5,000 is being offered for information leading to the arrest of this robber.