|This is the shocking moment Andrew Young was punched by Lewis Gill - Mr Young died of head injuries a day later in hospital|
Sherron O'Hagan, 41, said of Andrew Young's death: "It was just an accident. It's not a big deal. All of this will be forgotten about by tomorrow."
The mother of a yob who killed an autistic man with a single punch callously claimed last night that his crime was "no big deal".
Andrew Young, 40, died from a blow to the head by Lewis Gill, 20, in November last year after challenging the killer's friend for riding a bike on the pavement in the Charminster area of Bournemouth.
Yet Gill's mother Sherron O'Hagan, who was not married to his father Richard McKenzie, dismissed her son's crime yesterday.
Speaking from her home in Sutton, South London, the 41-year-old said: "It was just an accident.
"It's not a big deal.
"All of this will be forgotten about by tomorrow."
The mum-of-three spoke after it emerged her son's four-year jail sentence will be reviewed by the Attorney General.
Mr Young's mother Pamela had dismissed the sentence as an "absolute joke".
The 71-year-old said in a statement: "When we first heard Gill was given four years we thought it was too short.
"Looking at his criminal record he is obviously a trouble maker – we hoped he would get seven or eight years."
Justice Secretary Chris Grayling also waded in and called it a "repugnant crime".
He added: "I think most of the public will feel justice hasn't been done.
"In a case where the Attorney General judges the sentence to be too lenient, he can seek a longer sentence.
"He may choose to do this in that case."
Gill, of Sutton, had previous convictions for robbery and handling stolen goods.
He admitted manslaughter and was sentenced at Salisbury crown court, Wilts, last Friday.