21/08/2017 2:55 PM AEST | Updated 21/08/2017 3:07 PM AEST

Julian Cadman's Family Mourn 'Energetic, Funny And Cheeky' Boy

Days of searching have come to a tragic end.


The family of Julian Cadman will remember the seven-year-old killed in the Barcelona terror attack as an energetic, funny and cheeky boy as an international hunt for suspects behind the mass murder continues across Europe.

Julian Cadman was enjoying the sites with his mother on a sunny Barcelona day when a van plowed through pedestrians, killing 14 and wounding as many as 100 on Thursday.

Julian's mum, Jumarie, was among four Australians injured in the attack, and became separated from her son.

In Australia his family launched a social media appeal to find Julian, and Prime Minister Malcolm Turnbull asked us to pray. Julian's father, Andrew Cadman, made a desperate dash from Sydney to Barcelona on Friday night to find his son.

When he landed he was taken straight to the Forensic police centre.

"He was so energetic, funny and cheeky, always bringing a smile to our faces," the family said of Julian in a statement on Monday.

"We are so blessed to have had him in our lives and will remember his smiles and hold his memory dear to our hearts."

The loss of Julian's curious and generous heart will be missed by his schoolmates at St Bernadette's, Parramatta, in Sydney's West.

"The community of St Bernadette's is in mourning," said Greg Whitby, Executive director of the Catholic Education Diocese of Parramatta.

"Julian was a delightful boy -- curious and energetic with a kind and generous heart. He was much loved by his teachers and fellow students. The school community is feeling his loss deeply."

Julian's mum is still being treated for her injuries in hospital, where her condition was described by a hospital official on the weekend as "less serious".

Another Australian woman, Suria Intan, is being treated for serious injuries at Barcelona hospital, a hospital spokeswoman told Fairfax.

Hunt For Suspects Continues

Spanish authorities are continuing their search for Younes Abauyaaqoub, 22, and two others over the brutal terror attacks in Barcelona and the nearby coastal seaside resort of Cambrils.

Abauyaaqoub, who may have been the driver of the van that ploughed through crowds in Barcelona, is suspected of being part of a 12-strong terror cell who had collected 120 gas canisters.

It's believed they were planning a much more serious attack which was probably thwarted by an accidental explosion on Wednesday.

Others implicated in the attack have been arrested, Reuters reports, shot by police or killed in an explosion at a house in Catalonia a day before Thursday's van attack on Las Ramblas, Barcelona's most famous boulevard.

"We don't have any specific information on this but it cannot be ruled out," Catalan police chief Josep Lluis Trapero told a news conference in Barcelona when asked if Abouyaaqoub could have crossed into France.

Spanish media said authorities believe Abouyaaqoub drove the van through crowds of tourists and locals walking along Las Ramblas, leaving a trail of dead and 120 injured.

Trapero said he could not confirm who was behind the wheel.

Hours after the Barcelona attack, police shot dead five men wearing fake explosive belts in the resort of Cambrils, after they rammed holidaymakers with a car and stabbed others, killing one woman.