COLUMBIA, Mo. (AP) — Police in Columbia, Missouri, say they’ve failed to identify a suspect in a case involving a former University of Missouri swimmer who said she was raped by several football players, months before she committed suicide.

Police said Wednesday that they have closed their investigation into the case Sasha Menu Courey. The investigation began last year.

Menu Courey killed herself in 2011 at a Boston psychiatric hospital after withdrawing from classes at Missouri at midsemester and being diagnosed with borderline personality disorder.

Before her death, she told health professionals bound by confidentiality that she had been sexually assaulted as a freshman in 2010.

An outside review found the university fell short of federal standards under the Title IX law, for the reporting and investigation of sexual assault on campus.