Four Pittsylvania County teenagers required emergency medical assistance, some needing hospitalization after ingesting a mystery drug. Sources say the teens, ages 15 to 19 took an unknown, “unprescribed chemical or synthetic substance” in the past week. Media outlets report, investigators are working with chemist to identify the compound and the source behind the distribution. The sheriff’s office is asking anyone whom may have recently come into possession of these street available capsules containing a powdered substance not to risk ingesting the capsule. Experts say there is a high probability of unintended medical consequences.