A pound of marijuana and a machine gun are among the items seized in a drug bust in Opelousas by St. Landry Parish Sheriff’s narcotics detectives. Detectives received information that a subject named “Trey” was selling marijuana from the home at 413 Magnolia Street in Opelousas, Sheriff Bobby Guidroz reported. The information also stated that “Trey” was in possession of several firearms. Whe…