Winnipeg police have arrested a woman believed to have robbed a Winnipeg bank last week.

The 26-year-old suspect entered a Royal Bank in the 500 block of Main Street just after 3 p.m. Thursday and approached a 28-year-old female teller.

The suspect then demanded cash and suggested she had a gun, although the teller never saw the weapon.

The suspect made off with an undisclosed amount of money, police said.

Police arrested the suspect Saturday around 11 p.m. She has been charged with armed robbery using a firearm, police said.

The Major Crimes Unit is investigating the incident.