A violent Scumbag Thug who killed a vulnerable man with a single punch during a row over a bicycle could have his sentence extended following an investigation by the Attorney General.Lewis Gill was sentenced to just four years in prison over the death of Andrew Young, whose mother described the jail term as an 'absolute joke'.After multiple people complained to the Attorney General's Office, officials announced today that they will review the sentence - which will allow the killer to walk free within just two years.The Attorney General's Office has received a number of requests to look at the sentence given to Lewis Gill.'If a sentence given in a Crown Court appears to be very low, or unduly lenient, anyone can ask the Attorney General to examine the sentence, within 28 days of sentencing.