A Columbia woman was hospitalized Thursday after her vehicle and an unmarked police car crashed outside police headquarters in Ellicott City, Howard County police said. Ashley Harrington, 24, was driving a 2003 Chevy Malibu north on Court House Drive about 1 p.m., and Detective Kimberly Solter was making a left turn from Brightwell Drive onto Court House Drive, police said. Solter, in an unmarked 2003 Chevy Impala, was not responding to a call, and did not have lights or sirens activated, police said. Harrington suffered an arm injury and was taken to Howard County General Hospital, police said. Solter was not injured. The crash is under investigation.