Deep Sidhu has filed an application for fair probe in the January 26 violence case. New Delhi: Police is not supposed to collect evidence only to prove the guilt of the accused but also to bring forth a true picture, a Delhi court said on Friday while directing a probe on the plea by actor-activist Deep Sidhu who claimed he was not an "instigator" of the Red Fort violence on the Republic Day during farmers' tractor parade against the Centre's three new agri laws. The court added, however, that appropriate action may be taken and relevant sections added to the charges if Deep Sidhu was trying to mislead the investigation by fabricating false evidence.