The Kerala High Court has acquitted 13 RSS workers in a case relating to the killing of a CPI(M) activist in Thiruvananthapuram in 2008, saying the prosecution had miserably failed to prove the incriminating circumstances against the accused.

A bench comprising Justices K Vinod Chandran and C Jayachandran, on Tuesday allowed the appeal filed by the RSS workers challenging a Sessions Court verdict convicting them.