An FIR was registered against 41 BJP leaders and workers, including Union minister Arjun Munda and former chief ministers Raghubar Das and Babulal Marandi, for violating prohibitory orders during the saffron party's recent secretariat gherao programme in the Jharkhand capital, an official said on Thursday. Police had burst tear gas shells, used water canons and lathi-charged the protestors to prevent them from marching towards the secretariat on Tuesday, where prohibitory orders under Section 144 of CrPc were clamped. The administration had said the violators will be booked.