It's not something that happens often in Waterloo Region, but has been a frequent occurrence in August.
Waterloo Regional Police are investigating four bank robberies in the past month, three of them went down last week.
The latest happened on Saturday morning at the CIBC on King Street North in Waterloo.
A man, armed with a gun and dressed in construction gear, demanded money from employees.
Another CIBC branch, on Strasburg Road in Kitchener, was robbed on Friday afternoon.
That suspect was also wearing construction gear.
"Detectives are definitely looking into the possibility that these two are connected." Waterloo Regional Police Media Relations Coordinator, Cherri Greeno told KitchenerToday.
Greeno says they're appealing to any witnesses to get in contact with them.
She also adds police are "definitely concerned" about the recent rash of bank robberies.
The third bank robbery happened the morning of Wednesday, August 15 at the TD Canada Trust branch on Erb Street West in Waterloo.
A man handed a note to teller, demanding money. He fled in a yellow Dodge truck.
The fourth happened Wednesday, July 25 at the Scotiabank located at The Boardwalk in Waterloo.
Police say a man, armed with a weapon, walked into the bank, jumped on the counter and stole an undisclosed amount of money.
Thankfully no one was hurt in any of the robberies.
Anyone with information is asked to call police at 519-570-9777 or Crime Stoppers at 1-800-222-8477.