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The University of Montana is bringing in an outside investigator to review recent allegations that two female students may have been given a date-rape drug and sexually assaulted by several male students.

UM Vice President Jim Foley says that former state Supreme Court Justice Diane Barz was to begin the investigation Thursday. Foley says she has been asked to complete her review by the end of the year.

Students are taking finals this week.

Foley says the investigation seeks to find out what happened and the source of the sedative Rohypnol. The allegations surfaced in the past few days.

Missoula Police Chief Mark Muir says no one has made a formal complaint.

Associated Press