VIOLENT behaviour remains a problem at a prison for young offenders in the Staffordshire Moorlands, according to a report published by HM Inspector of Prisons this week. But the report acknowledges an improvement in support for the teenagers serving their sentences at Werrington Young Offenders Institute. Peter Clarke, chief inspector of prisons, says levels of violence against both staff and children at the prison remain "too high" and there is a need for a long-term violence reduction strategy. However, Mr Clarke described the results from January's inspection as "positive overall". He added: "The decline in outcomes we found at the previous inspection has been halted and, in care, reversed. "In other areas, recent improvements need more time to become embedded." HMYOI Werrington can accommodate up to 118 young people, aged between 15 and 17.