Johnny Melfah posted messages on a group online called 'Letz start a riot'.
After a judge lifted his right to keep his identity secret yesterday he admitted the offences today - and was warned he would face jail.
Jordan Blackshaw, 20, and Perry Sutcliffe-Keenan, 22, were last week jailed for four years after creating Facebook pages that urged rioting in their home towns.
Melfah, from Droitwich, Worcestershire, is thought to be the first child in the country charged in connection with rioting to be publicly identified even though he had not entered a plea.
Today he pleaded guilty to intentionally encouraging or assisting the commission of widespread thefts and criminal damage, in a 20 minute hearing at Worcester Youth Court. Read More