He is being held under section 4 of the Criminal Justice Act at Lucan garda station in connection with the Galway attack.
However gardaí and sex industry workers suspect that there are a number of other victims who are "too afraid" to come forward and report the crimes. The suspect was previously involved in the sex industry and had worked as a bouncer at a number of Irish brothels.
This incident speaks to the inherent violence of the trade." Kate Mc Grew of the Sex Workers Alliance of Ireland (SWAI) said: "We commend the bravery and strength of the women who came forward to report these horrific incidents.
This reporting is exceptional and we are glad we were able to connect the victims to safe and trusted individuals within the Gardai who then worked tirelessly to catch this man.
We have been aware that the sex trade is and always has been a dangerous industry especially when there is organised crime is involved.
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"We are very pleased that the women affected came forward and engaged with the gardai in order to get support.
A total of 130 of the 30,000 people who make regular donations to Oxfam Ireland have stopped since The Times reported that some of its staff used prostitutes in Haiti.
The Irish branch of the charity has pledged to take a lead role globally to implement safeguarding systems after details emerged of the sexual misconduct of the charity’s workers in Haiti after the earthquake in 2010.
Kieran Creaven, whose address cannot be published by order of the court, was arrested in Leeds on Saturday night.
Mr Creaven is a senior television producer in the RTÉ Sports department.