Siwan, Oct 04: CPI-ML (Liberation) workers today held dharna in different areas of Bihar's Siwan district to press for immediate arrest of culprits who killed a party activist Kamlesh Singh and injured other party workers on Thursday. CPI-ML MLA, Satyadeo Ram and former party legislator Amar Yadav took part in the dharna. Ram told reporters that they would intensify their agitation if the killers were not nabbed and punished soon. Singh and two other CPI-ML workers had been attacked while they were on way to Nautan village. While Singh died on the spot, two others were critically injured. Bureau Report