A/HRC/21/25 of force with respect to children deprived of liberty, and the existence of standards and norms concerning disciplinary measures and procedures with respect to children deprived of their liberty. 12. Enhancing effective co-ordination mechanisms and cooperation between different services in charge of law enforcement, justice and social welfare 96. States are urged to review law, policy and practical measures to ensure effective coordination and cooperation between child justice sectors, different services in charge of law enforcement and the social welfare and education sectors. To this aim, it is important to clearly delineate the responsibilities of different actors and institutions, to develop mechanisms for formal cooperation between stakeholders, and properly allocate resources. 13. Establishing and strengthening accountability mechanisms 97. States are urged to revise their laws, policies and procedures to promote accountability for incidents of violence against children within the juvenile justice system. States should undertake public investigations into all serious reports of violence against children at any stage of the juvenile justice system, carried out by persons of integrity and adequately funded and completed without undue delay. 98. States must ensure accountability of public officials who are found to be responsible for violence against children, through termination of employment, workplace disciplinary measures and criminal justice investigations where appropriate. 99. States should provide for redress and compensation for child victims and witnesses of violence within the juvenile justice system. This may include developing mechanisms to allow for claims of damage against the State, ensuring that victim compensation schemes are adequately funded, and strengthening effective support services for child victims of violence within the juvenile justice system. 100. States should create mechanisms to involve the media in the process aimed at ensuring that the community at large supports Government efforts to prevent and respond to violence against children within the juvenile justice system. 19