DAKOTA, Minn. — A vulnerable adult reportedly was swindled out of $80,000 over several months by someone posing as an FBI agent. Details were hazy until Winona County sheriff’s investors dig deeper. It was believed that the money was sent in cryptocurrency, which investigators said makes tracing almost impossible. Investigators were called to the victim’s address up Valley View Road out of Dakota about 9 a.m. Many cash withdrawal machines these days have have an option to convert cash to crypto.