ISLIP - Family and friends gathered tonight for a vigil to honor an Islip teen as homicide detectives continue to investigate his death. Kyle Underhill, 18, was found dead in a marshy, wooded area near Brook Street in Islip on Saturday morning. So far, no arrests have been made. The vigil was organized by the teen's friends and was held at Deer Park High School.Police continue investigation into murder of Islip teenPolice: Missing teen found in Islip was murderedPolice probe teen's 'suspicious' disappearance