Patrick Hickey interviewed by police after leaving Rio hospital

Senior Olympic official Patrick Hickey has been discharged from hospital and taken to a police station as part of an investigation into the illegal sale of tickets for the Rio Games.

Hickey, who has stood down from his role as president of the Olympic Council of Ireland while the investigation is ongoing, was arrested by Rio police at his hotel on Wednesday morning.

But the 71-year-old was immediately taken to the nearby Samaritano Hospital where he was monitored because of chest pains until approximately 4pm local time on Thursday.

A short OCI statement said he was "accompanied to a police station to complete a disposition".