Irish-Israeli woman Kim Damti, who had been missing in Israel since Saturday’s attacks by Hamas, has been confirmed dead.
Ireland’s foreign minister said it was devastating that the hope she might be found alive “has now been extinguished”.
Kim Damti, 22, was at the Supernova music festival in Re’im in southern Israel when she was last seen.
The killings at the festival were part of a wave of attacks launched by Hamas on Saturday.
More than 260 bodies have been recovered from the site.
Sending condolences to her friends and family, Irish President Michael D Higgins said the “circumstances in which her life was taken” at the music festival were “truly appalling”.
“It is not only those of us who are parents, but all of those who feel that young people should be free to attend events with their peers in conditions of safety, who will find such circumstances where a young life is taken so appalling,” he said.
He said her death was a reminder of the “outrageous breach of fundamental international law in conditions of conflict it is to target civilians in this way.”
Writing on social media, her sister, Laura Damti said the family had lost “our angel, our flower”.
She said her sister had been “murdered by cursed terrorists”.
Micheál Martin, who is tánaiste (deputy prime minister) as well as foreign minister, said he had spoken to Ms Damti’s family and sent them heartfelt condolences on behalf of the Irish government and people.
“We are with them in their grief,” he said.
“For anyone to lose a child is devastating. To lose a child in such circumstances is indescribable.”
