Three convicted child killers have been told they will have to stay in jail for another three years. 

The Parole Board has decided to block parole bids from Paul Dally, Peter Holdem and Anthomy Roma until 2007. 

Dally is in jail for the killing of the Lower Hutt teenager Karla Cardno, who was snatched in May 1989 as she biked home from school. 

Holdem was jailed for murdering the six-year-old Christchurch girl Louisa Damodran, who was abducted just metres from her house in 1982 as she walked home from school. 

Roma was jailed for killing the seven-year-old Napier boy Simon Reaney in 1991.