I think that students and faculty should have been notified that a double murder had taken place, and that the killer had not been apprehended. Cancel classes for the day too.
A diffoculty is that so many students live off campus. But, no, the administration probably should have tried to get the word out. But who could have anticipated such an eventuality?
And they should have closed off what they could, including that dorm and classroom buildings (since they wouldn't have been in use.) Keep people from getting too close.