The gist of the Arizona Daily Star
story is that this may or may not
be a suspect in the Robert Krentz murder—all Alejandro Chavez-Vasquez has done is "criminal history with convictions that include sex crimes, auto theft and being in and returning the the U.S. after being deported."
But that should be enough for authorities to be doing something.
[1 sought in burglaries; Krentz link is possible, By Brady McCombs, Arizona Daily Star, April 22, 2010]