The 71-year-old, who temporarily stood down as president of the Olympics Council of Ireland (OCI) after his arrest on Wednesday, is now being detained at the Bangu 10 facility in West Rio de Janeiro.
Fellow Irishman Kevin Mallon (36) is currently being detained at the adjoining Bangu 8 in the same complex.
Mr Hickey was wheeled from a hospital in Rio de Janeiro last night and taken by car to a police station to be quizzed about the accusations.
After four hours, he hid in the back of a car as he was taken to be medically examined once more before being finally brought to a detention facility pending further investigations.
Mr Hickey stood aside temporarily as Olympics Council of Ireland (OCI) president after his arrest in Rio de Janeiro on Wednesday.
The alleged ticket scam came to light after fellow Irishman Kevin James Mallon (36) was arrested on the day of the opening ceremony.
Mr Hickey is potentially facing three charges of facilitating ticket touting, formation of a cartel and ambush or illicit marketing. Brazilian detectives say the offences carry a sentence of up to seven years in prison.
Last night, the International Olympic Committee (IOC) confirmed that it had stopped Mr Hickey’s daily expenses of €800 a day, paid to him every day he was in Rio. But IOC officials condemned Rio police for allowing a TV crew to accompany them as a naked Hickey was arrested in a hotel, describing it as “theatre”.
IOC member Dick Pound said: “It makes it look like all sports administrators are corrupt. They’re not.”
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