A Rochester man is accused of sexually assaulting a teenage girl in January, but a second suspect the victim identified to law enforcement has not yet been charged. Investigators say the girl ran away from a foster care home in Farmington, and 41-year-old Mohammed Omer picked her up from a gas station and brought her to a Rochester residence, where she reported that Omer and another man sexually assaulted her. Prosecutors say the other man then dropped the victim at a gas station, where she met a friend who drove her to Children’s Hospital in Minneapolis.