GRAND FORKS, N.D. (AP) — Grand Forks police are working to determine whether a woman who robbed a credit union Monday is the same one who held up a bank in the city late last month.

Authorities say the description of the woman who robbed Citizen's Community Credit Union at midday Monday is similar to that of the woman who robbed a Bremer Bank on Sept. 30.

Police Lt. Derik Zimmel tells WDAZ-TV authorities will be studying surveillance video.

The woman who robbed the bank had a box cutter knife. Police did not immediately release the type of weapon used in the credit union robbery.

There were no customers in either financial institution at the time of the robberies, and no one was hurt.

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