A Spaniard who was reported missing after the London terror attacks on Saturday used his skateboard as a weapon against a knife-wielding terrorist as he tried to save a woman from being attacked, it has been revealed.

HSBC bank worker Ignacio Echeverria was last seen on Saturday night lying on the pavement near London Bridge after confronting one of the knife-wielding terrorists as he was attacking a female victim.

The 39-year-old, who lived in Poplar, east London, and came from Las Rozas near Madrid, tried to save the unidentified woman as he returned from a park with friends where he had been skateboarding.

His sister Isabel, an account operations manager with WEX Virtual Payments who also lives in London, has launched a social media appeal for help in tracking him down after failing to find him following approaches to hospitals, the police and the Spanish consulate.

Ignacio Echeverria (pictured) was last seen on Saturday night lying on a pavement near London Bridge after confronting one of the knife-wielding terrorists as he was attacking a female victim

Echeverria tried to save an unidentified woman in the terror attack as he returned from a park with friends where he had been skating. Friends who were with him on Saturday night said they last saw him lying on the pavement

On Monday, his father, Joaquin Echeverria, admitted the news was not looking good after he revealed the family had been asked for the missing man's fingerprints.

He wrote on Facebook: 'Hello to everyone who is helping us. We've been asked for Ignacio's fingerprints. Not a good sign.'

In a Facebook post, his father said that he had heard his son tried to defend someone with his skateboard.

'They saw him lying on the floor on the sidewalk after defending someone with his skateboard,' he wrote.

Friends immediately offered their support, with one saying: 'Don't lose hope. You have a lot of people with you at all times.'

Echeverria , whose full name is Ignacio Echeverria Miralles de Imperial, was born on May 25, 1978, and is described as around 5ft 8in tall.

Emergency services in Spain, including the Red Cross in Madrid, are appealing for information on Echeverria's whereabouts

Echeverria's sister Isabel, an account operations manager with WEX Virtual Payments who also lives in London, has launched a social media appeal for help in tracking her brother down. Pictured above, emergency responders at London Bridge following the attack

He and his friends had been cycling back from the park when they came upon the terror attack, friends said.

He was wearing jeans, size 7.5 Vans black trainers and a dark top, as well as a gold chain. It is thought he may have been carrying no ID on him at the time.

Friends who were with him on Saturday night said they last saw him lying on the pavement.

The Red Cross in Madrid, which is helping to appeal for information about Echeverria's whereabouts on its Twitter site, said: 'Ignacio was in the London Bridge area with friends when the terror attacks happened.

Echeverria was wearing jeans, size 7.5 Vans black trainers and a dark top, as well as a gold chain. It is thought he may have been carrying no ID on him at the time

On Monday, another relative, Joaquin Echeverria, admitted the news was not looking good after he revealed the family had been asked for the missing man's fingerprints

Echeverria was skating with friends before the London attack on Saturday night. He's pictured above skateboarding elsewhere

'He was last seen falling to the ground by the his friends after trying to defend one of the victims.

'He was wearing a gold chain, Vans black trainers, jeans and a black or dark top. He has a large scar above an eyebrow.'

Ignacio's sister Isabel said on Facebook alongside a picture she posted of him: 'I'm looking for my brother. Help me if you've seen him. He was at London Bridge during the terrorist attacks.'

London journalist Geoff Ho was reported missing on Saturday after being stabbed during the London Bridge terror attack but was later found in hospital.

It subsequently emerged he was injured after trying to break up what he thought was a normal fight outside a pub which two knife-wielding terrorists were trying to storm.

The family of Xavier Thomas are desperately searching for him. He was with his girlfriend, Christine Delcros, when the attack happened. She is said to be seriously injured in hospital

An unnamed French citizen died in the attacks and another is still missing, the country's Foreign Minister, Jean-Yves Le Drian has said.

The victim is reportedly a 27-year-old from Saint-Malo in Brittany who was working in the Boro Bistro when he was attacked. He was named in French media only as 'Alexandre'.

French newspaper Ouest France said the victim had been living in Britain for the past two and a half years.

The missing French citizen is believed to be Xavier Thomas, whose sister-in-law posted a desperate message on Facebook yesterday.

He is understood to have been with his girlfriend Christine Delcros when the attack took place. Ms Delcros is said to be seriously injured in hospital.

Her sister Nathalie Cros Brohan wrote online: 'We are on our way to London, my sister Christine Delcros and her boyfriend Xavier Thomas have been victims of #londonattack #LondonBridge.'

'My sister is seriously injured and hospitalised. I appeal to all those who have news of Xavier Thomas that is missing ... he is not one of the 4 French found. We are terribly worried.'

Sara Zelenak has been missing since becoming separated from friends on Saturday

A family friend, Diane Winter, has launched an online appeal to find out where she is

A 21-year-old Australian woman last seen on London Bridge also remains missing after being caught in Saturday night's terror attack.

Sara Zelenak, from Brisbane, became separated from her friends and has not been seen since, family friends have said

Family friend Diane Winter said more than 24 hours have passed with no news from the Australian consulate about Ms Zelenak's welfare.

Ms Zelenak calls her mother everyday from London where she works as a nanny, Ms Winter said.

But Ms Zelenak has not answered her phone or responded to texts since she was separated from her friends the moment chaos broke out in central London.

Frenchman Sebastien Belanger (pictured) has not been seen since the attack

His girlfriend, Greda, who was in Malta at the time, has returned to London and posted appeals to find him on Facebook

Pictured is Sebastien Belanger's girlfriend Gerda Bennet. The Frenchman is still missing

She wrote: 'I still have no news. Please if anyone has seen him or knows anything contact me'

She said Sebastien was 'exactly at the place where the attack happened' and has not heard from him for more than 24 hours

Frenchman Sebastien Belanger has not been seen since the attack.

His girlfriend, Gerda Bennet, who was in Malta at the time, has returned to London and posted appeals to find him on Facebook.

She wrote: 'I still have no news. Please if anyone has seen him or knows anything contact me.'

She said Sebastien was 'exactly at the place where the attack happened' and has not heard from him for more than 24 hours.

His personal Facebook page states that he has worked at Blueprint Cafe, near Tower Bridge, and Coq D'Argent, in Bank.

An appeal page, called Help Us Find Sebastien Belanger has been created.

Socaine Drz's family have also issued a desperate plea to find him after the terror attack

Socaine Drz's family have also issued a desperate plea to find him.

His auntie Hatice Bodur shared a picture of him on Facebook and wrote: 'Please if anyone has seen my nephew Socaine Drz please contact me asap his (sic) been missing since 11pm last night.'

'If you see this Socaine please return home. We are worried sick police are looking as well.'