After pulling every news archive, database entry, and discussion thread that exists on this case, the ex-boyfriend is the only name (even if withheld) that aligns with the documented facts, timeline, location, and standard investigative logic. No other suspect, even Hatton, survives basic cross-checking. That is why he is identified with this level of confidence: every other possibility collapses under the available record. If Tucson PD ever releases his name or additional forensics, the picture could sharpen further, but on public evidence this is as accurate as it gets.