Within minutes of a "safety alert" message about a sex assault in the Norlin Library being sent, ¶¶ÒõÂÃÐÐÉä staff recognized the suspect and called the ¶¶ÒõÂÃÐÐÉä Boulder Police Department. Shortly after 5 p.m. Thursday, ¶¶ÒõÂÃÐÐÉäPD arrested suspect Lamin Njie.