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SULPHUR, Okla. (AP) – A southern Oklahoma judge is asking for more information as he decides whether there’s sufficient evidence against a man charged with manslaughter in a bus crash that killed four Texas college students.

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(credit: AP Photo/The Oklahoman/Steve Sidney)

(credit: AP Photo/The Oklahoman/Steve Sidney)

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Russell Staley is charged with four counts of first-degree manslaughter in the September 2014 crash that killed four softball players from North Central Texas College. The Oklahoma Highway Patrol says Staley lost control of his semitrailer on Interstate 35, crossed the center line and crashed into the team’s bus, tearing the vehicle open.

Prosecutors allege Staley was under the influence of synthetic marijuana at the time of the crash. But in an order issued Monday, Murray County Associate Judge Aaron Duck asked prosecutors and defense attorneys to submit briefs on whether this claim should be admissible in court.

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