A registered sex offender is accused of sexually assaulting a woman in Colorado Springs. Gary Vernon Powell, 45, was arrested Monday on suspicion of sexual assault, first-degree assault and first-degree burglary, according to Colorado Springs police. The attack happened in the victim's home in the 300 block of Cheyenne Boulevard, police said. The victim told police she was sleeping nude on her bed Sunday when she woke about 11 p.m.