Illegal Itenerant?

The NYT reports that the man who killed 11 people by parking his car on a train track in Los Angeles in an attempt to commit suicide and caused a derailment, Juan M. Alvarez, is "an itinerant laborer with no fixed address." Is that the same thing as an illegal alien? Of course, the Times wouldn't tell us if he was. Illegal or not, he will now face murder charges and possibly the death penalty.