After more than 2000 lines of inquiry over 46 years, SA Police are no closer to solving one of the state's most notorious crimes.
Children Joanne Ratcliffe, 11, and Kirste Gordon, 4, went missing from the Adelaide Oval on this day in 1973.
Crime Stoppers SA have again highlighted the mysterious case in the hope of finding new information that could lead to a conviction, or the discovery of the children's remains.
On August 25, 1973, around 13,000 football fans attended the Round 20 SANFL clash between North Adelaide and Norwood.
Joanne's parents and Kirste's grandmother allowed the two girls to leave the Edwin Smith stand to go to the toilet together during the game.
When they had not returned, Mr Ratcliffe began a frantic search for the girls.
Witnesses reported they may have been seen with an unknown man in his 40s near Port Rd in Thebarton.
Since that day, more than 2000 lines of inquiry have been followed, but investigators are still unable to piece together exactly what happened.
Their hopes were pinned on a sketch of the man that has been regularly distributed since the disappearances.
Detectives, on several occasions, also searched two wells in the mid-north region for clues to no avail.
The girls are presumed to have been murdered, but the case remains open.
SA Police are offering a reward of up to $1,000,000 for any information that leads to the recovery of the girls' remains or a conviction.
In March this year, Joanne's mother Kathleen sadly died without answers.
Australian Associated Press