Johnny Ortiz -- who starred alongside Kevin Costner in "McFarland, USA" -- is currently sitting behind bars after being charged with premeditated attempted murder charges ... TMZ has learned.
According to legal docs, obtained by TMZ, Ortiz and another man, Armando Miguel Navarro, allegedly tried to kill a man named Brian Duke "for the benefit of, at the direction of, and in association with a criminal street gang with the specific intent to promote, further and assist in criminal conduct by gang members."
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