(Las Vegas, NV) — At least 200 people gathered last night at Arbor View High School, to remember the teenager who was murdered in the northwest valley. Police say 15-year-old Alyssa Otremba was sexually assaulted and stabbed at least 40 times. Her burned body was found Saturday in the desert near her home. The suspect, 19-year-old Javier Righetti, faces murder, kidnaping and assault charges. He’s scheduled to make his first court appearance this morning.