They staged a silent dharna at the SP office covering their mouths with black badges.The National Highway from the Kamapalli Square to the Medical Square was jammed with party workers and thus vehicular movement was disrupted. later, the leaders submitted a memorandum addressed to the State Election Commission, Secretary to the State Human Rights Commission, the RDC (Southern division), DG Police and the Union Home Minister demanding a probe into Das’ ‘unlawful’ arrest.