MINNEAPOLIS (WCCO) — Minneapolis police are investigating after three banks in south Minneapolis were robbed in just six days.

Police believe it was one man who pulled off all three crimes.

“We’re concerned about it, but we’re really more concerned that the suspect is going to continue this pattern until we catch him,” Deputy Chief Bruce Folkens said.

He says the U.S. Bank branch on Hennepin Avenue South was hit around 9:30 a.m. last Friday.

Five days later at noon, the TCF Bank branch on 26th Avenue South was robbed.

And the next day, another TCF Bank branch on was hit, this time on West Lake Street.

In each instance the man responsible dressed differently, but investigators believe they are dealing with one man — who is now considered a serial bank robber.

“The approach is the same. And let’s face it, they’re banks. They have tremendous video, pictures,” Folkens said. “People don’t go unnoticed in these crimes.”

Snap shots from surveillance video show the man in action. Folkens says he walks into the bank and passes a note to the teller.

“There’s no gun seen, but there is an implication that he has a gun,” he said.

Folkens says they are looking for a white man with a medium build. He is between 26 and 30 years old and has a mustache.

Police believe someone out there knows this man.

“People know people,” Folkens said. “If they’re wearing masks and sunglasses, it’s amazing how many times people call and say, ‘Hey, I know that person,’ and give us the tip on it.”

There is a cash reward for anyone with information leading to the arrest and conviction of this bank robber. Call Crime Stoppers at 1-800-222-TIPS (8477).

Reg Chapman