The commemoration of the 56th birthday today of journalist-activist Gauri Lankesh, shot dead in Bengaluru last year,saw differences crop up among her siblings over the SIT probe to nab the killers and the motive behind it. While Gauri's sister Kavitha expressed confidence on the Special Investigation Team (SIT)probing the case,their brother Indrajit said he would move the High Court for a CBI probe.