ST. PETER (TEC News) -- The FBI is investigating the armed robbery of a St. Peter bank Thursday morning.

Authorities say the suspect approached a Wells Federal bank employee as they arrived at work aroun 7 a.m.

The suspect entered the bank with the employee and fled with an undisclosed amount of cash.

The suspect is described as a 6-foot tall white male with a medium build. He was wearing a black mask and wearing black gloves with a two-toned hooded jacket and light-colored pants.