The Allen County Prosecutor's Office has announced the results of an investigation into a police action shooting that happened last spring.  Lucius Washington was shot and killed by Indiana State Police Trooper Seth Mann during an altercation on May 18th, at the intersection of Main and Cherry Streets.  The prosecutor's office says that no criminal charges will be filed as a result of the shooting and that there is insufficient evidence of any criminal liability on the part of Trooper Mann.