Web Summit founder Paddy Cosgrave has been interviewed by gardaí in relation to the investigation into Leo Varadkar's leaking of a confidential document.
Mr Cosgrave confirmed to thethat he had been interviewed by gardaí on Tuesday morning.
Mr Varadkar is at the centre of an investigation after it emerged he leaked a confidential GP contract to his friend in 2019.
The Tánaiste had conceded that he had shared a copy of a new pay agreement between the Department of Health and the Irish Medical Organisation (IMO) with his friend Dr Maitiú Ó Tuathail, the leader of rival group, the NAGP.
Mr Cosgrave is a friend of Chay Bowes, who had been in correspondence with Dr Ó Tuathail and provided screenshots of the leaked contract, initially toand later to gardaí.
The National Bureau of Criminal Investigation (NBCI) is currently investigating the matter after a complaint was made last November.
Mr Cosgrave is the latest in a string of high-profile people who have had interviews and engagements with gardaí, with former TD Kate O'Connell and current TD Bernard Durkan recently interviewed.
Former health minister Simon Harris also met with gardaí. None of whom are accused of any wrongdoing.
Mr Varadkar met detectives from the National Bureau of Criminal Investigation in April.
Dr Ó Tuathail has also been interviewed by the NBCI.