RED WING — A sex offender's covert Facebook account led to new firearm charges. In 2021, Anthony Joseph Nasseff pleaded guilty to one count of third-degree criminal sexual conduct with a Cannon Falls child under age 15, in exchange for the dismissal of first-degree charges alleging use of force. He was sentenced to five years in prison, served two-thirds of the time per Minnesota statute, and received another 10 years' probation. On June 26, Red…