President Michael D. Higgins has released a statement following the attack on Monday night at the Ariana Grande in Manchester Arena.
The death toll is currently at 22, two of whom have been named as a 16-year-old and 8-year-old from the area. 59 concert-goers are also seriously injured.
President Higgins' statement goes on to say:
"This cowardly attack on innocent citizens will have appalled all those who care for democracy, freedom and the right to live and enjoy the public space.
"Manchester has been home to the Irish and so many nationalities for centuries and at this terrible time, I want to send the people of this great and welcoming city not only our sympathy but our solidarity.
"Our thoughts in Ireland are with all of the people of Manchester and our neighbours throughout the United Kingdom at this time.
"I am conveying this message to the Mayor of Greater Manchester, Andy Burnham and I will be writing formally to Her Majesty Queen Elizabeth to convey the sympathy of the Irish people."