Can they legally get their deposit back and break the lease because of safety issues?

My daughter's roommate was raped. It was considered a hate crime with 5 individuals involved. This did not happen on the property. The person was hiding in the back seat of her car off. It was a very violent crime. My daughter and her roommate are afraid for their safety at this point. They were told by the arresting police that one person was on probation, and had a history of battery, and breaking PPO's. The rape advocate told them they could move because they fear for their life once this person is released on bail. They also have 4 other people under investigation that have not been arrested yet, but chances are they will be in the near future. They were told that they had the right to do so without any issues.