Flags fly at half-mast and books of condolence open for Brussels victims

President Higgins has signed the book of condolence in Dublin

Brussels, books of condolence, Dublin, Michael D Higgins, Belgian embassy, Tricolour, half-mast

The Tricolour at half-mast over Government Buildings in Dublin | Image via @merrionstreet on Twitter

Flags are flying at half-mast on all government and official buildings today, as a mark of respect for those killed in the Brussels terror attacks and the tragic deaths in Buncrana.

President Michael D Higgins has signed the book of condolence at the Belgian embassy in Dublin.

While the Lord Mayor of Cork also opened a book of condolence at Cork City Hall for the victims.

It will  be available for signing for two weeks during regular office hours.

It comes after 34 people died at terror attacks in the Belgium capital.

The Tricolour flies at half-mast at the Department of Foreign Affairs in Dublin | Image via @CharlieFlanagan on Twitter

Explosions went off at Brussels airport and Malbeek metro station, for which the Islamic State claimed responsibility.

Two of the bombers who carried out the twin deadly attacks in Brussels were brothers and known to police.

While another suspect has reportedly been captured in the city's Anderlecht district.

President Michael D Higgins arrives at the Belgian embassy in Dublin | Image via @SeanDefoe on Twitter

It comes as the Department of Foreign Affairs says Irish citizens planning travel to Brussels are advised to delay non-essential travel until the situation has stabilised.

It also updated travel advice for both Belgium and France, asking people to exercise extreme caution.

President Michael D Higgins has described the attacks as 'desperate, hopeless and useless'.