A Garda probe is underway after a serious threat was made to Tánaiste Simon Harris and his children.

Gardaí are investigating after a threat to Mr Harris and his family was seen on Sunday morning.

The threats, directed at Mr Harris’s children, were posted on social media on Saturday.

It is understood a counter-terror unit are investigating the matter, after Mr Harris alerted gardaí.

A Garda spokesperson confirmed to the Irish Examiner:  “An Garda Síochána is currently investigating this matter.”

It is not the first time Mr Harris has been threatened via social media this year, as protestors have previously showed up outside of his house in Co Wicklow, where he lives with his wife and children.

During previous incidents, masked men gathered outside his property and a bomb threat was directed at his house.