 Five members of the Provisional IRA were convicted of involvement in his murder.A member of the Fine Gael party, Fox was first elected to Monaghan County Council in 1967, and as a Fine Gael Teachta Dála (TD) to the 19th Dáil for the Monaghan constituency at the 1969 general election.He lost his seat at 1973 general election but later that year was elected to the 13th Seanad by the Cultural and Educational Panel.