WATERTOWN â The state attorney generalâs office will not conduct an investigation into what caused the death of city firefighter Peyton Lane S. Morse, who suffered a medical emergency while he was involved in a training exercise at the state fire academy in early March. Assemblyman Mark C. Walczyk, R-Watertown, and state Sen. Patricia A. Ritchie, R-Heuvelton, were notified that Attorney General Letitia A. James will not proceed with an inquiry into the young firefighterâs death. He was found unresponsive following mask-confidence training involving breathing apparatus at the New York State Academy of Fire Science on March 3. Michael J. Schenk, Mr. Walczykâs chief of staff, said he was told by a representative from the attorney generalâs office that it would be a conflict of interest if her office would have to legally defend the state fire academy.