DETECTIVES who investigated Britain's most prolific serial rapist are trying to trace a further 60 men who they believe were victims.

Reynhard Sinaga is serving a minimum of 40 years in jail after being convicted of 159 sexual offences against 48 men.

23 further victims were identified by Greater Manchester Police (GMP) after the force received 155 reports following a public appeal.

But investigators are trying to trace another 60 men who they believe were victims of the Indonesian student, who drugged men and filmed himself violating them.

Detective Chief Inspector Zed Ali said: "Supporting those affected by Sinaga's despicable crimes has always been our priority, alongside securing the maximum possible jail term for him.

"GMP, working with partners including St Mary's Sexual Assault Referral Centre and Survivors Manchester, will always be on hand to help anyone who believes they may have been a victim of a sexual offence.

"It is important we continue to make attempts to trace the around 60 men we believe are victims of Sinaga, but who haven't made contact with police or support services yet.

"Our appeal, launched last year, has so far identified 23 further victims of Sinaga. I commend their bravery for getting in touch and the strength and dignity they have shown throughout the past year during our further investigations.

"Ultimately, they decided not to pursue further prosecutions given Sinaga is already serving a record sentence for rape offences, and it will be four decades before he is even considered for release.

"That they are satisfied justice has been done is testament to the hard work of our officers, who were able to secure the evidence needed to put Sinaga in prison - where he belongs."

Sinaga preyed on lone, drunk young men around nightclubs near his flat in Manchester, posing as a Good Samaritan who offered them a floor to sleep on or promised them more drink.

Many of his victims have little or no memory of the assaults.

Sentencing Sinaga at Manchester Crown Court in January 2020, Judge Suzanne Goddard QC described him as "an evil serial sexual predator" and a "monster".

Anyone who believes they may have been a victim of Sinaga can contact police via the Major Incident Public Portal at or by calling 101.

Anyone who wishes to seek support but does not want to talk to police can contact St Mary's Sexual Assault Referral Centre on 0161 276 6515 or Survivors Manchester on 0161 236 2182.