Anthony Ler

The boy was not named to protect his identity since he was a minor. Court documents and media instead referred to the boy as "Z". Anthony Ler was convicted of masterminding the murder, and was hanged after he lost his appeal and clemency plea. As Z was a minor below the age of 18 at the time of committing the crime, he could not be sentenced to death and was hence detained indefinitely, serving nearly 17 years in prison before his release on 2 November 2018.
The murder case was adapted into a documentary and an episode of a true crime TV series. The memoir of Subhas Anandan, Ler's lawyer, was subsequently adapted into another true crime series and published in ''Guilty As Charged: 25 Crimes That Have Shaken Singapore Since 1965'', a collection of crime stories by ''The Straits Times''. Provided by Wikipedia