A teenager has been charged following an assault in Middleton-by-Wirksworth which left a 16-year-old boy with serious head injuries.
The assault happened on Tuesday, November 13.
The 16-year-old boy remains seriously ill in hospital.
A 17-year-old boy from Wirksworth, who had previously been arrested and released under investigation, has now been charged with conspiracy to commit robbery.
Another 17-year-old boy from Middleton-by-Wirksworth was charged in January with causing grievous bodily harm with intent and both will appear at Chesterfield Youth Court on March 26.