NSW boy confirmed dead in Barcelona terror attack

The Australian government has confirmed that missing boy Julian Cadman died in Thursday's Barcelona terror attack.

In a statement put out by the Department of Foreign Affairs and Trade, on behalf of the family, the seven-year-old was remembered as an "energetic, funny and cheeky" boy.

"Julian was a much loved and adored member of our family," the emailed statement said early on Monday morning.

"As he was enjoying the sights of Barcelona with his mother, Julian was sadly taken from us. He was so energetic, funny and cheeky, always bringing a smile to our faces."

The Australian government has confirmed NSW boy Julian Cadman was killed in the Barcelona terror attack. Photo: 7 News

The family's statement came shortly after a tweet from the verified Alerta Desaparecido Twitter account, which announced the death in Spanish.

The translated statement said: "The family of Julian Cadman has told us that unfortunately he is one of the victims of the attack and has asked us to thank all the people who have spread the news.

"In these so unjust, hard and painful moments we share in the feeling of the relatives and friends of Julian. Rest in peace."

Australian schoolboy Julian Cadman was visiting the city with his mother. Picture: Supplied

The seven-year-old was among the 14 people killed when a van driven by a suspected Islamist militant mowed down pedestrians in Barcelona's Las Ramblas boulevard last Thursday.

Julian was separated from his mother who was taken to hospital in a serious condition.

The pair had been in Barcelona for a wedding with his mother now in hospital recovering from injuries suffered in the attack.

Authorities in Australia and Britain had flagged Julian was missing since Thursday.

There was days of uncertainty for the family, with the tragic news confirmed on Sunday.

The van reportedly used in the attack.

Spanish authorities say DNA was used to identify Julian.

As well as the British-Australian boy, four Spaniards died in the Barcelona van attack, as did two Italians, two Portuguese, one Belgian, one US citizen and a Canadian, emergency services and authorities from those countries have confirmed so far.

A Spanish woman was also killed hours later when attackers rammed several people in a car and stabbed others in the seaside resort of Cambrils, lower down the coast from Barcelona.

Julian Cadman became separated from his seriously injured mother Jomarie when a van rammed through a crowd of pedestrians. Photo: 7 News

A three-year-old boy was among the Spaniards killed in the van rampage, Spanish media reported.