Authorities currently do not know who the woman is, but have one suspect.
The woman, who looked to be about 60 years old, entered a Fifth Third Bank in Michigan on Saturday around 11:30 a.m. She ordered the teller to hand her money as there was a bomb in her bag.
The bag was made of cloth and the teller could not determine what was inside, but knew there was something hard in it.
"It did look like there was a hard object in there," Clinton Township Lt. Eric Reincke said. "But it was folded over so you couldn't see what was inside."
"It turned out that it was a couple of cans of spaghetti sauce inside the bag. If you don't know what's in a package, you have to treat it like it is possibly an explosive device."
After the robbery, the employees and visitors left the bank as the Michigan State Police bomb squad inspected the bag's contents.
The woman got away in a silver, square-shaped car that was driven by a man. No one was injured during the robbery and it is unknown how much money she took.
"We're still developing suspect information," Reincke said. "But we do think we have a pretty good lead on a suspect."