What a shame, bet he's crying into his pillow right now as I post this..... Sean Mercer, 18, was assaulted at HMP Moorland in Doncaster, South Yorkshire, but the incident was stopped by the "timely intervention" of staff, a spokeswoman added. The gang member was taken to hospital after the attack in the communal area of the prison, according to reports. The attack is thought to have left Mercer with a broken nose and facial injuries. A Prison Service spokeswoman said: "We can confirm an incident took place at HMP Moorland at 2.30pm on Saturday, December 27, in which two prisoners assaulted each other. "The incident lasted less than two minutes and was quickly resolved by the timely intervention of staff." The spokeswoman would not release any further details. Last month Mercer, of Good Shepherd Close, Croxteth, Liverpool, was jailed for life and was told he would serve a minimum of 22 years behind bars. Mercer, a Croxteth Crew member, blasted three shots across the car park of the Fir Tree pub in Croxteth on August 22 last year. His targets were rival Strand Gang members who had arrived on his turf - but one of the shots hit innocent Rhys, who was walking home from football training. The 11-year-old schoolboy died in his mother Melanie's arms. I did look for this on the site so if I missed it and it is elsewhere, I apologise.