A bullet struck an exterior window of the White House but was stopped by ballistic glass, the U.S. Secret Service said Wednesday. \"A round was stopped by ballistic glass behind the historic exterior glass. One additional round has been found on the exterior of the White House,\" the Secret Service said in a statement. The Secret Service discovered the damage to the window Wednesday morning, according to the statement, days after reported gunfire near the White House on Friday. \"This damage has not been conclusively connected to Friday\'s incident, and an assessment of the exterior of the White House is ongoing,\" the Seret Service said. U.S. Park Police and the Secret Service launched an investigation into Friday night\'s incident after witnesses heard gunshots heard near the White House. Police have located a suspected vehicle and recovered an assault rifle. Police also located a suspect who is the registered owner of the rifle.