Jose Mahugnos had been charged with manslaughter in connection with the death of German Serrano last December.
But although the grand jury did not indict Mahugnos, he was departed back to Mexico on Tuesday, a federal immigration official said.
Serrano's family was very upset Mahugnos wasn't going to prison.
“How could they just close the case?" said Serrano's sister, Flor. "He killed a person, even if it was an accident. He’s 24 years old; he should know more about guns, like when it was loaded.”
-- Bill Miller