Mankato (KMKO)-Formal charges were filed yesterday against a man accused of threatening someone with a knife and fighting with police in Mankato. 26-year-old Nathan Vickers was arrested after an altercation in a bar Thursday night. Once outside, Vickers threatened the man with a knife. After being arrested, Vickers fought with officers. The struggle continued in the Blue Earth County Jail, with officers using a taser to subdue the man. Vickers appeared before Judge Bradley Walker yesterday. He was charged with six felonies, including assault, terroristic threats and possession of a controlled substance. He remains jailed pending further proceedings.