The families of Israeli citizens, who are believed to have been taken hostage by Hamas, say they do not know if their loved ones are alive or dead.
Around 150 Israelis and foreigners, including children, have been held hostage in Gaza since Saturday's attack on Israel.
Dafna Sella and her husband Tal, who are from Tel Aviv, were due to return home from their honeymoon last weekend but their connecting flight from Turkey was cancelled.
The couple, who travelled to Ireland to stay with family members in Dublin, are flying back to Tel Aviv tonight from Dublin Airport.
Speaking to RTÉ News, Dafna Sella said she believes some members of her family are among the people taken hostage.
"My cousin was kidnapped and her daughter too," she said.
She said the family "don't know where they are" and "don't know if they are alive."
Ms Sella said they got no information from the Israeli government.
"We're trying to search for them in different videos, that are being spread, or photos but we're just helpless at the moment," she added.
She said her family are "heartbroken" and "sad" and she said "it's also hard to see all the misinformation being spread on social media, people denying what happened."
"My cousin is missing, it's a fact."
Ms Sella said her cousin and her cousin's daughter had been living in a kibbutz near Gaza.
She said there is no word yet on their whereabouts after their house was broken into by Hamas militants "and they are missing".
Asked if she is concerned for the welfare of her cousin and daughter, Ms Sella said "yeah of course".
"I don't know if they're alive. We're hoping that they're alive and they return home soon."
The couple said it was "hard to be far from our family and friends" when the attack occurred.
"We actually found out when we landed in Turkey what happened and all of the flights were cancelled, so we had to go to a different country, so we came here to family."
Asked if they were worried about returning to Israel given what is happening, Ms Sella said "yeah, for sure, we were safe here" in Ireland.
She said they do not know what situation they are going back to when they arrive home.
"Many missiles are falling on houses, people are dying. We are going to stay at my parents house because they have a safe room. In our apartment we don't have a safe room."
