Ian Cleary, 32, attacked a fellow Gettysburg College student in her dorm room more than a decade ago. A series of Facebook messages helped lead to his arrest.

Ian Cleary, 32, pleaded guilty to second-degree sexual assault over a decade after he stalked Shannon Keeler at a party, snuck into her dorm and sexually assaulted her at Gettysburg College.

Ian Cleary, who messaged his victim 'So I raped you,' pleaded guilty in Adams County court to the 2013 rape of a Gettysburg College student.