Aurora gunman James Holmes applied to join a gun range but failed to become a member after the owner became concerned over his "bizarre" behaviour.
Glenn Rotkovich said yesterday that he received an email application on June 25 from Holmes, who shot dead 12 people and injured 58 others at a cinema early on Friday.
Holmes said he was not a user of illegal drugs or a convicted felon, so Mr Rotkovich followed up by calling his apartment to invite him to a mandatory orientation at the Lead Valley Range in Byers, Colorado, the following week.
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