Police say the men entered the business with a gun and ordered an employee into the back room. They then raided the store's registers and ran off.
Beyond reports of pulling the woman's hair, there are no reports of actual violence in this case.
"Fortunately, we don't have a lot of armed robberies. They do happen in the city of Kennewick and the surrounding area - and right now, the cases that happened at Ace Cash Express has been forwarded to the Kennewick Police Department unit for further investigation," said Kennewick Police Officer Craig Hansen.
Police are still working leads in this case. If you have any information on the suspects, call Kennewick Police.