Twin Falls, Idaho ( KMVT-TV / KSVT-TV ) Twin Falls Police are investigating an armed robbery Sunday night at Walmart.

Staff Sergeant Terry Thueson tells KMVT News that a Caucasian man brandished a knife at customer service, demanded money and left with an undisclosed amount of cash.

The incident happened at 9:39 pm. Twin Falls County assisted Twin Falls Police Department in the incident. No arrest have been made at this time and no one was injured during the robbery.

News Radio 1310 KLIX will have more as this story develops.