BISMARCK, N.D. (AP) — Tammy and John Sadek still don't know the details surrounding the 2014 death of their son Andrew, which the autopsy classified as "undetermined," but the Rogers couple will get to make their case that the authorities had unfairly pressured him into being a drug informant.

Andrew Sadek, a 20-year-old North Dakota State College of Science student, was found dead in the Red River with a bullet in his head and a backpack full of rocks tied to his body. His parents believe he was murdered after being coerced into being an informant, but authorities have remained tightlipped about the investigation, which they say is ongoing, and haven't said whether they've identified any suspects in the killing.

The Sadeks filed a wrongful death lawsuit two years ago against the Richland County Sheriff's Department, one of its deputies and the county. The case, which seeks unspecified damages, is scheduled to go to trial next June 15 in Jamestown. The parties agreed to move it from Wahpeton, where the university is located, due to concerns over being able to seat an impartial jury.

The defendants have asked the judge to dismiss the case, saying they're immune from being sued and did nothing wrong.

Andrew Sadek was a second-year electrical technician student when he got caught selling $80 worth of marijuana on campus. He was facing charges that carried a maximum sentence of 41 years in prison when he agreed to become a confidential informant for the Southeast Multi-County Agency Drug Task Force.

Minnesota's Bureau of Criminal Apprehension is leading the probe into his death. Spokeswoman Jill Oliveira said this week that "it is an ongoing, active investigation." She released no details, citing the continuing nature of the investigation.

Sadek's death prompted the North Dakota Legislature last year to enact new protections for confidential drug informants. Andrew's Law clarifies the rights of people offered the role of a confidential drug informant, including their right to an attorney. It also requires a written agreement.

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