An estimated 20 uniformed officers plus detectives and a dozen special operations team officers responded to the shooting scene to search for a gunman who did not exist.
A nearby day-care center and other business were locked down while heavily armed officers conducted the search of the motel and surrounding area.
Police now believe Walden unintentionally shot himself and that a friend hid the gun for him so he wouldn't get in trouble for having it.
Walden was airlifted to a trauma center for treatment. His condition has not been released. Police are still investigating the incident and no charges have been filed.