Later, C.P.Mathen was elected in the First Lok Sabha (Indian Parliament) from Mavelikara Constituency in 1952 and was appointed as the Indian Ambassador to Sudan.
Later, C.P.Mathen was elected in the First Lok Sabha (Indian Parliament) from Mavelikara Constituency in 1952. After completing his term in the Lok Sabha, in 1957, he was appointed as the Indian Ambassador to Sudan.