Authorities confirm that a missing persons report was filed on Monday for the 32-year-old actor, who played John Connor in "Terminator 3: Rise of the Machines."
Officials said Stahl's wife, who filed the report, last saw him on May 9. They said they do not suspect foul play and that the investigation is in its early stages.
Stahl's career has spanned more than 20 years, including roles in "The Thin Red Line" and "Sin City." He also appeared in the movie, "Sleepwalking," which co-starred Charlize Theron.