Serial killer Robert Black's fourth murder conviction will prompt further investigations into other unsolved child disappearances, police have said.
The pledge to continue to re-examine cold cases linked to the notorious Scottish paedophile came after he was found guilty at Armagh Crown Court of kidnapping and murdering Jennifer Cardy in Northern Ireland 30 years ago.
"I certainly think the story of Robert Black doesn't end here today, there are lines of inquiry which we still have and we are still looking at," Detective Superintendent Raymond Murray said after the jury delivered its unanimous verdicts.
While Black, 64, has now been convicted of four child murders, he is suspected of involvement in many other crimes, notably the 1978 abduction of Devon schoolgirl Genette Tate.
Jurors took four hours and 15 minutes over two days to find Black, a former delivery driver, guilty of kidnapping and murdering Jennifer on August 12 1981.
Outside the court, Jennifer's father Andy said the family's strong Christian faith had sustained them through the horrors of the trial.
He said: "Robert Black stole the life of our daughter, Jennifer, but Robert Black didn't steal the lives of me and my family - we've lived a happy, prosperous life, but we miss Jennifer each and every day."
Mr Cardy said the family had prayed for Black in the wake of the verdict, but he said he believed his daughter's killer should pay the ultimate price for his crimes: "I would have to say that I would still say that somebody who commits murders like this, I believe their lives should be taken, I believe they should be put to death, that's my belief."
The schoolgirl was snatched as she cycled to a friend's house in the quiet Co Antrim village of Ballinderry. Her body was found six days later in a dam behind a roadside lay-by 15 miles away at Hillsborough, Co Down.
In 1994, Black was convicted of three unsolved child murders in the 1980s - those of 11-year-old Susan Maxwell, from the Scottish Borders, five-year-old Caroline Hogg, from Edinburgh, and Sarah Harper, 10, from Morley, near Leeds - and a failed abduction bid in Nottingham in 1988.