The man held in connection with the murder of a 69-year-old nun in Pala allegedly had killed another elderly nun at a convent near Erattupetta in April this year, police said on Tuesday. Satheesh Babu, who has been remanded in police custody for the probe into the murder of Sister Amala in Lisieux Carmel Convent at Pala, has “confessed” to having attacked 83-year-old Jose Maria Iruppakkad at her room in the Sacred Heart Convent in Chettuthodu in Erattupetta in April this year, they said.