The Supreme Court on Wednesday said whenever there is information of force being used at police stations resulting in serious injury and/or custodial deaths, it is necessary that persons be free to complain for redressal.

Against this backdrop, the top court directed the Centre to install CCTV cameras and recording equipment at the offices of investigating agencies like the National Investigation Agency, the Central Bureau of Investigation, the Enforcement Directorate, the Directorate of Revenue Intelligence, the Narcotics Control Bureau etc - which have the power of arrest and to carry out interrogations.