<p>A civil society organisation has urged police to step up measures to investigate the disappearance of a Karen human rights defender, pointing out that the case is being neglected.</p> <p>The <a href="https://www.facebook.com/crcfpage">Cross Cultural Foundation (CrCF)</a>, a civil society organisation which promotes and monitors human rights in Thailand, on Wednesday submitted a letter to Police Region 7 in order to urge the police to step up efforts in investigating the disappearance of Pollachi Rakchongcharoen, aka Billy, a Karen human rights activist who disappeared on 17 April 2014.</p>