His face has become instantly recognisable around the world: A red-haired baby boy holding a pink elephant toy, looking directly into the camera with a toothless smile.
His name is Kfir Bibas, and he is the youngest of the 253 hostages taken into Gaza by Hamas and other militant groups during the terror attacks against Israel on October 7.
Today Kfir turns one.
The baby boy was kidnapped from Kibbutz Nir Oz in southern Israel alongside his parents Yarden and Shiri, and his four-year old brother Ariel.
His family held an event in Tel Aviv, commemorating what they called "the saddest birthday in the world".
READ MORE: Israel says it is exhuming bodies in Gaza to determine if they are hostages
Large crowd of people filled the square in central Tel Aviv that has become known as the "Hostages Plaza." Many were holding orange balloons, a nod to Kfir's red hair. A large screen displaying the number of days the hostages have been held in Gaza stood nearby - 103.
On Tuesday, a smaller group of friends and relatives of the Bibas family held an event at Nir Oz on Tuesday, commemorating Kfir's birthday with a large balloon display and a cake featuring the famous photo of Kfir with the pink elephant.
The same picture was propped up next to Israel's President Israeli Isaac Herzog when he spoke at the World Economic Forum in Davos on Thursday.
It is not clear whether Kfir and his family are still alive. The two boys and their mother were not released from Gaza during the temporary truce in late November, despite the fact that the deal agreed between Israel and Hamas called for all women and children to be set free.
The Israel Defense Forces (IDF) said at that time they believed the family was being held hostage by other militia groups and not by Hamas.
However, later that week, Hamas said, without providing any evidence, that Kfir, his brother and his mother were killed in an Israeli airstrike.
The IDF said at that time the it was assessing the claim. Asked on Thursday whether there was any conclusion in that investigation, a spokesperson told CNN: "The IDF has no comment."
A few days after making the claim that the family were dead, Hamas released a video of Yarden Bibas, Kfir's father, in which he blamed Israeli Prime Minister Benjamin Netanyahu for the death of his wife and two children. Bibas appeared to be in extreme distress in the video and was very likely speaking under duress.
The IDF called the video a "cruel act of psychological terror which Hamas is using against families of hostages."
Israel believes 253 hostages were taken into Gaza during the Hamas attack on October 7. Following hostage releases and one rescue, the Prime Minister's Office says 132 hostages remain in Gaza, of whom 105 are alive and 27 dead.
Since the Hamas attack sparked war, more than 24,000 Palestinians have been killed, according to the Health Ministry in Hamas-ruled Gaza, and some 85 per cent of the narrow coastal territory's 2.3 million people have fled their homes.
