Ireland’s chief medical officer is in hospital, undergoing tests unrelated to Covid-19.
Dr Tony Holohan told RTE news that he had been feeling unwell at the start of the daily coronavirus press briefing on Tuesday night.
He was seen clutching his chest by social media users during the briefing, which is streamed online.
He went to St James’s Hospital in Dublin for tests and is expected to be released on Thursday.
Dr Holohan has been giving daily updates to the media on the situation regarding the outbreak since it began last month.
His deputy, Professor Ronan Glynn, will take over in his absence.
England’s chief medical officer, Professor Chris Whitty, is on a leave of absence after he contracted Covid-19.
He had been working alongside UK Prime Minister Boris Johnson and Health Secretary Matt Hancock, who also have the virus.