Allen spoke hours after a judge unsealed the case, which included allegations that Aldrich threatened to kill the grandparents and to become the “next mass killer” more than a year before the nightclub attack that killed five people.The suspect’s mother and the grandparents derailed that earlier case by evading prosecutors’ efforts to serve them with a subpoena, leading to a dismissal of the charges after defense attorneys said speedy trial rules were at risk, Allen said.MacKinnon sidelined about a month with upper-body injury ‘Next mass killer’: Dropped case foretold Colorado bloodbath Colorado gay club shooting suspect charged with hate crimes A's get reliever Chad Smith from Rockies for minor leaguer The former district attorney who was replaced by Allen told The Associated Press he faced many cases in which people dodged subpoenas, but the inability to serve Aldrich’s family seemed extraordinary.The documents describe how Aldrich told the frightened grandparents about firearms and bomb-making material in the grandparents’ basement and vowed not to let them interfere with plans for Aldrich to be “the next mass killer” and “go out in a blaze.” Aldrich — who uses they/them pronouns and is nonbinary, according to their attorneys — holed up in their mother’s home in a standoff with SWAT teams and warned about having armor-piercing rounds and a determination to “go to the end.” Aldrich’s grandparents’ call to 911 led to the suspect’s arrest, and Aldrich was booked into jail on suspicion of felony menacing and kidnapping.“At the end of the day, they weren’t going to testify against Andy,” Xavier Kraus, a former friend and neighbor of Aldrich, told AP."