While on parole for second-degree murder, a 50-year-old West Warwick man sent “indecent material” to a person he believed was a 14-year-old boy, the state police said Friday in announcing the convict’s arrest.Christopher M. Rocheleau, of 78 Esmond St., was charged with three counts of electronically disseminating indecent material to a minor, state police Capt.