The Brief Police in Prince William County, Virginia, are investigating an alleged attempted sexual assault that occurred at Jiffy Lube Live during a concert on Tuesday night. The victim, a 20-year-old woman, said an unknown man implied he had a knife and forced her to a secluded area. Police in Northern Virginia are investigating an alleged attempted sexual assault that took place during a concert at Jiffy Lube Live earlier this week. What we know:The incident reportedly happened on September 16 between 8 p.m. and 11 p.m. at Jiffy Lube Live, located in Bristow. "We're hoping that we can get this guy identified," Jonathan Perok of the Prince William County Police Department said.