Reynhard Sinaga, a Manchester based student, named as Britain's worst ever rapist

A student from Indonesia can today be revealed as Britain's worst ever rapist after being convicted of more than 150 attacks during a two and a half year reign of terror in Manchester.

Reynhard Sinaga, 36, preyed on young straight men in the bars and clubs close to his city centre apartment, spiking them with the party drug GHB, and then attacking them while they slept.

Following four separate trials - that can be reported for the first time today - Sinaga has been convicted of raping and sexually assaulting 48 different men, between January 2015 and June 2017.

But it is feared the actual number of victims could run into hundreds, as the vast majority of men he targeted were completely unaware they had been attacked.

Police have video and other evidence of 190 separate victims but the judge said the true scale of his offending may never be known.

Sentencing him to life in prison with a minimum of 30-years, Judge Suzanne Goddard QC told Sinaga: "You are an evil serial sexual predator who has preyed upon young men who came into the city centre wanting nothing more than a good night-out with their friends.

"One of your victims described you as a monster. The scale and enormity of your offending confirms this as an accurate description."

The judge continued: "Rarely, if ever, have the courts seen such a campaign of rape as this, covering so many victims over a prolonged period."

She said the true scale of Sinaga's offending may never be known but that police appeared to have established 195 men were filmed by the defendant while unconscious.

Sinaga, the son of a wealthy banker who moved to Britain in 2007, carried out the rapes in his luxury flat in the heart of Manchester’s vibrant city centre.

Targeting students and other young men, he would leave his apartment late at night, homing in on those who looked drunk or vulnerable.

After striking up conversation, he would invite them back to his nearby flat, with offers of drinks or the opportunity to charge their phones.

Once there he would spike them with the class C party drug GHB, which would quickly render them unconscious.

He would then rape or sexually assault them, often numerous times, filming the attacks on his mobile phone for his own perverted posterity.

The vast majority of his victims said they had no recollection of what had happened and believed they had simply passed out in the flat after drinking too much.

His youngest victim was 17 and the oldest 36, and all but three of the 48 victims identified by police, were straight.

For two and a half years, barely a week went by when he did not carry out a fresh attack, sometimes raping two different victims in the same weekend.

Such was the success of his technique, that he once picked up a victim, just 60 seconds after leaving his apartment.

In April 2017 one of his victims went to police after waking up in an unknown room feeling ill and extremely disorientated.

He told detectives he had a vague recollection of being sexually assaulted but was unable to recall where he had woken up believing it may have been in a hotel.

Police carried out an investigation but after focusing on the Ibis and Pendulum Hotels, failed to make any progress.

Sinaga was eventually caught in June 2017 when his final victim came round during the rape and managed to fight Sinaga off before reporting him to the police.

When officers examined his mobile phone and other digital devices they found a vast cache of horrendous footage showing him in the act of raping his victims.

Detectives were able to trace many of the victims because Sinaga used social media to look them up after the attacks, sometimes boasting to his friends that the liaisons had been consensual.

He only used a condom once, but miraculously he tested negative for HIV or any sexually transmitted diseases.

Police believe there could be scores more victims who have not yet been identified and are now appealing for any young men who believe they were targeted by Sinaga to come forward in complete confidence.

Sinaga was born in Jambi in Indonesia in 1983 into a wealthy middle class and devoutly Catholic family.

His father was a banker who later moved into the palm oil business.

Sinaga came to the UK on a student visa in 2007, enrolling on an MA in sociology at the University of Manchester.

In 2012 he began a PhD in human geography at Leeds University, but remained living in Manchester.

The rape investigation is the largest in British legal history and it is the first time prosecutors have split charges across four separate trials.

Jurors were forced to watch extremely graphic videos showing the attacks, and it was thought the impact of being faced with the full scale of his offending would be too much for one jury to cope with.

Sinaga only gave evidence in two of the four trials, but claimed all of the sex had been consensual, despite the fact some of his victims could be heard snoring in the footage.

In total Sinaga has been convicted of a 159 charges involving 48 men, including 136 rapes, eight attempted rapes, two assault by penetration and 13 sexual assaults.

Victims told how Sinaga’s attacks had ruined their lives in harrowing testimony read to the court.

One man said he already would have taken his own life had it not been for the support of his mother.

Another told of his guilt at having shown Sinaga a picture of his unborn child. Others revealed they had kept their ordeal secret from their friends and family.

Another victim said: "I genuinely thought he had helped me. How wrong could I be? The day I gave evidence was the hardest day of my life.

"I have a message to you, Sinaga. I am not going to let your ruin my life. I am going to fulfil my career plans and live a happy, content life."

During the hearing, Sinaga showed little reaction to the victims’ distressing testimony, occasionally fiddling with his shoulder-length hair and yawning.

As he was sentenced, Sinaga showed no emotion as he stood with his hands clasped together in the glass-encased dock. He then turned around and was led away down the stairs.

Assistant Chief Constable Mabs Hussain, of Greater Manchester Police, said: “Reynhard Sinaga is a depraved individual, who targeted potentially vulnerable men that he had spotted walking on their own after a night out.

“To the rest of the world he came across as an engaged member of society who was studying for a PHD qualification and had a small circle of law-abiding friends that he would socialise with.

"However beneath that façade was a serial sex offender, who we now believe to be Britain’s most prolific rapist. The fact that he was able to cover-up his true nature for so long, just serves as further evidence of his calculating criminal nature."

Ian Rushton, North West Deputy Chief Crown Prosecutor, said: “Reynhard Sinaga is the most prolific rapist in British legal history.

“His extreme sense of sexual entitlement almost defies belief and he would no doubt still be adding to his staggering tally had he not been caught.

“Sinaga’s unthreatening demeanour duped these young men – many of whom thanked him for his kindness in offering them a place to stay – into thinking this monster was a Good Samaritan.

“But once back at his flat he used victims as objects purely for his own gratification – then appears to have derived further twisted pleasure from re-watching his films in court and putting victims through the trauma of giving evidence.”

:: Anyone wishing to make a report to the police relating to Sinaga is asked to contact: 0800 092 0410 (calls made from within the UK) / 0207158 0124 (international calls).

Reports relating to Reyhard Sinaga can also be made online via the Major Incident Public Portal: https://mipp.police.uk/ operation/06GMP19V24-PO2