Disturbing footage has emerged of the moment police tasered a founder of their own force's race relations group in the face.

Judah Adunbi, 63, was mistaken for a wanted man as he walked his dog near his home in Bristol on Saturday.

He argued with officers who demanded he give them his name before he was tasered and knocked to the ground by the force of the weapon.

The grandfather-of-three, who helped found an Independent Advisory Group between police and Bristol's black community, said he thought he was going to die.

A video has emerged of police firing a taser in the face of a member of the force's own race relations advisory group. He was mistaken for a wanted man before a row outside his home

Mr Adunbi feared he was going to die after he fell back onto the pavement near his home

Mr Adunbi said: 'I was just finishing my walk and coming home. Police were driving up the road and caught a glimpse of me.

'One of the officers came right in my face. They insisted on trying to antagonise me.'

He added: 'I made my way towards the gate took my keys out and went to go through. They tried to force it open which made me release the grip I had on the gate.

'Then I heard this sound and felt something hit me below the lip. I collapsed on the ground.

'She started saying you've been tasered. I was paralysed. I couldn't speak or move. It's a grace of god that I'm still alive. She has done a very terrible thing to me.'

Mr Adunbi said he refused to give police his name because it was the second time he had been mistaken for a drug dealer.

He claimed that on the first occasion seven years ago he suffered a lasting injury to his shoulder during his arrest.

He told ITV West Country that when he was stopped by two community officers on Saturday, and asked if he was this man again, he was so humiliated and angry he refused to give his name.

The 63-year-old, pictured (left) with his dog Hazel and (right) at a community event, helped set up an advisory group to help police with race relations

'Bear in mind the trauma I was going through as a result of fear, this matter has happened on a previous occasion,' he said.

'I was terrified, I was frightened because the same scenario is happening all over again, they are trying to accuse me.'

The incident was captured on film by a neighbour Tom Cherry, 39, who said he believed the officers actions were 'unjustified and disproportionate'.

Mr Adunbi is one of the founders of the Independent Advisory Group set up by the police

The video shows two officers questioning Mr Adunbi outside his home in the Easton area of Bristol on Saturday morning.

The local resident who filmed the incident shouts: 'He's one of my neighbours. He's walking his dog. He's a lovely bloke.'

Mr Adunbi is heard saying: 'I'm not telling you my name. I've done no wrong.'

He is then heard swearing at officers before he walks through his back gate and a policeman steps in to stop him shutting it.

Mr Adunbi (left) is well-known in his area having organised a number of community events

As neighbours shout at police, one the officers pulls out her taser and fires it, hitting Mr Adunbi in the face. He's falls back onto the pavement and an officer restrains him.

A police officer tells the angry neighbour: 'He was fighting'. But the neighbour replies: 'He wasn't fighting. He was trying to get into his house.'

College of Policing guidance states that, where here circumstances permit, officers 'should give a clear warning of their intent to use the taser'.

The guidelines states: 'They should give sufficient time for the warning to be heeded, unless to do so would unduly place any person at risk, or would be clearly inappropriate or pointless in the circumstances of the incident.'

Somerset and Avon police say they are investigating the incident and have referred themselves to the Independent Police Complaints Commission.

Mr Adunbi was questioned outside his home on Saturday by officers searching for a suspect

He refused to give police his name by was prevented from closing his back gate by police

He was tasered by the woman police officer and fell to the pavement where he was restrained

One of the officers has been restricted from using a taser while the investigation takes place.

They say they will examine the body camera footage of both officers as part of their investigation.

Chief Supt Jon Reilly said: 'I've met with Mr Adunbi and we had a constructive conversation. We're aware of concerns within the local community and we take these concerns very seriously.'

Mr Adunbi was charged with assaulting a constable in the execution of their duty and using threatening or abusing behaviour or disorderly behaviour likely to cause harrassment, alarm or distress. The charges have now been dropped.

IPCC Commissioner Cindy Butts said: 'We would like to reassure the community that we will conduct a thorough investigation into the circumstances of this incident and whether the use of Taser by officers was appropriate in these circumstances.

'It is important that anyone who witnessed the incident, or may have any footage of it, make contact with our investigators to help us establish the full facts. We are also seeking to speak to the man and the officers involved at the earliest opportunity.'