Sister Abhaya murder case

Sister Abhaya (born Beena Thomas; (1971-02-26)26 February 1971 – (1992-03-27)27 March 1992), a Knanaya Catholic sister, was found dead in a well filled with water in St Pius X Convent in Kottayam on 27 March 1992. Investigation into this death is by far the longest running murder investigation in the State of Kerala.

Source: Wikipedia — Sister Abhaya murder case (CC BY-SA 4.0)