VIDEO: A Portsmouth police officer and two firefighters experienced symptoms after exposure to a substance believed to be fentanyl Sunday afternoon after responding to a reported overdose. The Portsmouth Fire Department firefighters and police officer were transported to Charlton Memorial Hospital in Fall River, Massachusetts; the firefighters were released on Sunday and the police officer returned to duty Monday morning. Sunday at 1:05 p.m., Portsmouth police went to an East Main Road residence for the reported overdose of a 25-year-old Portsmouth man. The Fire Department was subsequently dispatched. The man was taken to a nearby hospital for medical treatment. Portsmouth Detective Lt. Michael Arnold did not know the hospital the man was transported to nor his condition as of Monday. The Portsmouth police confirmed that nobody will be prosecuted in regard to this incident, as is standard with overdose cases, which are protected by the Good Samaritan Overdose Prevention Act of 2016.