The autopsy of Riley Strain, a student at the University of Missouri, has revealed no signs of “trauma related to the commission of a crime,” the police reported this Monday. The student disappeared on March 8 and was found two weeks later in the river 8 miles from the city center.

Police are still awaiting the results of the medical examiner's toxicology test on the 22-year-old student. According to police, what exactly happened to Strain is still under investigation.