Police in Rio have been outlining evidence they've gathered in their ticket-touting case against former Olympics Council of Ireland president Pat Hickey.

At a press conference, police alleged that the OCI helped to channel tickets for the Rio Games to sports company THG.

Police also claim they've seen emails between Mr Hickey and THG's owner Marcus Evans in which they discussed the sale of Olympic tickets, dating back to 2010.

They allege the most recent exchange between the men was on 3 August, just before Olympics.

Pat Hickey denies any wrongdoing.

Meanwhile, police say that OCI official Dermot Henihan is now free to leave Brazil.

Two other officials will be questioned in the coming days.