Tributes paid to tragic victims as search continues for missing boy (7)
Family and friends have confirmed the death of loved ones following the attack in Barcelona which killed at least 14 people and left many others injured.
There are also missing people - relatives have been searching high and low, desperate for their loved ones to be safe.
The family of a British-born seven-year-old boy have posted on Facebook begging for his safe return after he was separated from his injured mother.
Julian Cadman was out in Barcelona with his mother when the terrorist's van struck where they were walking, separating them. The two were reportedly there to attend a wedding.
His father Andrew Cadman, from Sydney, said he had spoken to his son only hours before. Mr Cadman was travelling to Barcelona to search for him.
The little boy moved out to Australia three years ago, according to relatives.
A family member said that at the time of the attack he was wearing a white shirt with collar, and shorts, and has long hair.
His mother Jumarie 'Jom' Cadman was found in hospital and is in a serious but stable condition.
His aunt says the family are desperate for news of their "sweet, bubbly" boy.
Elke Vanbockrijck was killed in the attack, according to friends, colleagues and the town she was from. She was the mother of two young sons. Authorities said she was on holiday with her husband and sons when she was run down.
The town of Tongeren, Belgium, is opening a memorial book for the fallen woman, who according to friends was a football fan and a lot of fun.
According to people who live in the town, she worked at the local bank.
A friend wrote: "Super woman, honey of a mom, everything you want in a friend or colleague! Then she gets taken away from us! Terrible, strength to all colleagues and especially to the family and Vic and Gus"
Francisco López Rodríguez (60) who was a native of Lanteira (Granada), was reported missing by family members following the attack.
He was pictured on Las Ramblas before a van careened into pedestrians, including Mr Rodríguez, who according to family members died on the spot.
Raquel Baron Lopez, his niece, posted a series of desperate tweets saying she was looking for him in hospitals across the city, but to no avail.
She let her followers know the tragic news when she learned her uncle died.
Four other members of her family went missing - but were safely located in the hours following the attack.
Among the dead is Italian father-of-two Bruno Gullotta (35). He leaves behind his partner, young mother Martina Gullotta, and his two children.
A colleague wrote on Facebook: "He was a friend, a father and a colleague.
"He was one of us at Tom's hardware, everyone knew who he was. We're all going to miss him."
The Italian foreign ministry identified the second Italian killed as Luca Russo, who was on holiday with his fiancée. She was injured but was not in serious condition.
He was from Bassano Grappa in the northern province of Treviso and worked at a company in Padua. According to local media, he was a 25-year-old engineering graduate.
His sister wrote an hour before he was identified as dead: "help me bring him home, please".
"We are born without bringing anything, we die without taking away anything. In the middle we argue for something," was the last thing he posted on his Facebook page.
A three-year-old child is among those confirmed dead, Spanish media reported. The child is from Rubi in Barcelona and was apparently taken to San Pau hospital but could not be saved.
Heidi Nunes was on holiday with her husband Jared Tucker, a 42-year-old construction worker.
The two were in the path of the vehicle - and ended up becoming separated. The couple from Walnut Creek, California, were celebrating their first wedding anniversary in Europe, and had just finished drinks on Las Ramblas.
"Next thing I know there's screaming, yelling," Ms Nunes, a 40-year-old teacher, told NBC News.
"I got pushed inside the souvenir kiosk and stayed there hiding while everybody kept running by screaming."
She saw a video of a man who appears to be him, severely injured, and being helped by a passer-by.
However, she has searched high and low and seen nothing of him since.
A spokesman for the US State Department said: "At this time we can confirm that one US citizen was killed. We can also confirm that one US citizen sustained minor injuries."
It is unclear whether the statement refers to Mr Tucker, who is still missing.
Fifteen of the victims were last night in critical condition.
In Australia, Foreign Affairs Minister Julie Bishop confirmed four Australians had been hurt, while one person is missing.
Twenty-six French citizens were injured, with at least 11 in serious condition, the French Foreign Affairs Ministry said.
Spain's civil protection had earlier said that among the victims were nationals from France, Germany, Spain, the Netherlands, Argentina, Venezuela, Belgium, Australia, Hungary, Peru, Romania, Ireland, Greece, Cuba, Macedonia, China, Italy and Algeria - without detailing whether they were dead or injured.