Muzaffarnagar, In an incident, a 7-year-old boy was allegedly sodomised by a youth in Rampuri area yesterday. A case has been registered against the accused Naveen Kumar and efforts are on to trace him, said police. While, in another incident, police arrested three persons in connection with gangrape of a 17-year-old girl at New Mandi area yesterday. Acording to police, "the accused Siddharth, Mohit and Ankit were arrested for raping the girl and making a video of the act".