THE shocking moment a man with Asperger’s syndrome was killed by a single punch to the head has been caught on CCTV.

Andrew Young, 40, was attacked in a busy suburban street after warning cyclist Victor Ibitoye not to ride his bike on the pavement because it was dangerous.

The pair argued briefly before Mr Ibitoye rode off but moments later his friend, Lewis Gill, approached Mr Young and punched him in the face without provocation.

Horrific CCTV footage shows Mr Young falling backwards and striking his head on the road.

Gill, 20, stalks off, briefly glancing back to see his victim lying motionless on the ground.

The attack happened in a busy shopping area of Bournemouth, Dorset, in broad daylight.

Mr Young died in hospital the following day with his mother Pamela by his side.

Mrs Young said later that her son’s Asperger’s meant that he would have fixated on somebody cycling on the pavement and the fear that someone might get hurt.

The shocking footage was released today following the sentencing of Gill to four-and-a-half years jail on Friday. He had pleaded guilty to a charge of manslaughter.

“(The sentence is) an absolute joke,” Mrs Young told British media outside Salisbury Crown Court.

“I saw the CCTV footage in court and you can see that Andrew didn’t cause Lewis Gill any harm.

“I sat with him when he died. I wish that awful man who took my son away had pleaded not guilty so he would have got a longer sentence.

“I’m a committed Christian but I think that if someone takes a life they should be prepared to forfeit their own. There have been many people who have committed manslaughter or murder in this country and they never even serve a full sentence.”

The incident happened at 4.25pm on November 6 last year outside a Tesco supermarket in Charminster, Bournemouth.

The court heard Mr Young told Mr Ibitoye that riding his bike on the pavement was a “dangerous activity”.

After Mr Ibitoye cycled away from Mr Young, he apparently had no idea what Gill was about to do, the court heard.