LOUDOUN COUNTY, Va. (DC News Now) -- The Loudoun County Sheriff's Office (LCSO) said it arrested a 19-year-old from Ashburn for fatally shooting a 16-year-old boy over the weekend. Just before 6 p.m. on April 12, deputies responded to a call about a boy who was hurt in the front passenger seat of a vehicle in front of the Harris Teeter in Southern Walk Plaza. Despite first responders' efforts, he died from his injuries. The incident was first reported as a stabbing, but deputies later determined that the boy had been shot at another location and taken to the parking lot. The person who drove him there is not considered a suspect, LCSO noted. Investigation underway after teen found shot outside grocery store in Broadlands, deputies say Police identified Fadlalla Mohamed as the shooter and arrested him Sunday afternoon in Leesburg. He was charged with first-degree murder and use of a firearm in commission of a felony. He is being held without bond. Anyone with additional information is asked to contact LCSO Detective Whitehead at (703) 777-1021 or to submit a tip through the Loudoun County Crime Solvers at (703) 777-1919. ...read more read less