surveillance video of one of the men running from one of the incidents. two other women came forward to say they were groped in their bedroom, the same night, the same general area, same suspect description. we need to double-bolt our bolts. you never door. you never think it will happen to you. reporter: this is now forcing young women to do what police have been asking, be on guard. reporter: police say in each of the cases, there is no sign of forced entry into the victim s home. that s why they re asking students here to be on guard and lock their windows and doors every night. live at college park, derek valcourt, wjz eyewitness news. derek, thank you. campus police are also encouraging women to call police immediately if they notice anything suspicious for their apartments or home. an update on the buoy state university student, accused of killing her roommate. denise is in the riewz room newsroom with what happened. a judge ordered 19-year-old alexi