This web site uses browser storage to make it easier to use. Please check the box if you consent to this. You can find more detail here


Detectives are appealing for people who may have information linked to a large scale rape investigation to come forward.


Operation Island is a long-running investigation being carried out by Greater Manchester Police concerning Reynhard Sinaga (born 19/02/1983).

Sinaga, who is of no fixed address, has already been convicted of 159 counts of sexual offences – including rapes and sexual assaults – against 48 men, which took place in Manchester between January 2015 and June 2017.

The victims had their drinks spiked and as a result have vague memories of what happened to them on the date of the offences.

Sinaga has been sentenced to life imprisonment and will serve a minimum of 40 years before he is eligible for parole.

The investigation has identified evidence linked to potential further offences committed by Sinaga. This evidence indicates that these further offences could have taken place between 2005 and June 2017.

Greater Manchester Police is now appealing for anyone who believes they may have been targeted by Sinaga to come forward. In addition to potential victims of Sinaga, detectives are also keen to speak to anyone who can provide information about his offending - including how and where he bought the drugs he used to spike his victims.

Specialist detectives are working closely with partner agencies to provide specialist support to all victims targeted by Reynhard Sinaga, regardless of where they live.

Detective Inspector Zed Ali, who is leading the investigation for Greater Manchester Police, said:

“This is a truly shocking case of young men being targeted by a depraved individual.  Our priority from the beginning has been to provide specialist support for victims as they come to terms with the horrendous ordeal that they have been subjected to and we have worked with St Mary’s SARC and Survivors Manchester to provide this specialist support."

“We are continuing to work together to support anyone else targeted by Reynhard Sinaga, and I would ask anyone who thinks they have been attacked by him to come forward."

“You might not be completely sure what happened, or how to talk about it but there is help available. Depending on what makes you feel most comfortable, you can choose to contact my team of specialist detectives or our partner agencies confidentially.”



Contact Information

If you wish to provide any information, please submit using the 'Submit Information' form.
You will then have the choice to remain anonymous or request contact from the Police or a Support Agency. You will be contacted within 5 working days.

If you would prefer to speak to the Police, please call - 101.

If you want to speak to specialist support services please call:

St Mary’s Sexual Assault Referral Centre - 0161 276 6515
24 hour helpline

Survivors Manchester - 0161 236 2183
Mon, Wed, Fri: 9:00am - 6:00pm
Tue: 9:00am - 8:00pm
Thu: 9:00am - 8:30pm

National Male Survivors Helpline – 0808 800 5005
Mon, Wed, Fri: 9:00am - 5:00pm
Tue & Thu: 8:00am - 8:00pm
Sat: 10:00am - 2:00pm