Ciara, last seen at her Dundalk home in 1997, was 17 at the time she went missing

Ciara, who was 17 at the time, last seen at her home at Bachelors Walk, Dundalk

Two witnesses have recently come forward with information in search for teenager

Chief suspect in case of pregnant woman’s murder in 1996 arrested abroad for separate crime

Michael and Bernie Jacob, whose daughter disappeared in 1998, say the discovery of Elaine O’Hara’s remains has challenged theories about women who went missing in the 1990s