SULPHUR, Okla. -- The Texas truck driver accused of causing a 2014 crash that killed four members of a women's college softball team has been ordered to stand trial.
Russell Wayne Staley is charged with four counts of first-degree manslaughter.
The Oklahoman reports that a Murray County judge ruled Thursday that prosecutors had enough evidence for a trial on all four counts.
Federal transportation officials said last year they believe Staley was likely high on synthetic drugs during the crash -- although a blood test didn't confirm he had drugs in his system.
The National Transportation Safety Board voted 4-0 that the likely cause of the head-on collision on a highway near Davis, Okla., was the semi truck driver's incapacitation, "likely stemming from his use of synthetic cannabinoids."