Pubdate: Thu, 29 April 1999 Source: Times, The (UK) Copyright: 1999 Times Newspapers Ltd Contact: http://www.the-times.co.uk/ Author: Ian Brodie COCAINE DISGUISE Washington: Colombia's drugs cartels have developed a black cocaine that sniffer dogs and chemical tests cannot detect (Ian Brodie writes). Smugglers create the substance, known as coca negra, which has no smell; when it reaches its destination, it is turned back into cocaine paste. Barry McCaffrey, President Clinton's "drugs tsar", told a Senate commitee in Washington that American narcotics agents were very concerned about the development. The cartels have also moved cocaine in shades of red, yellow and blue. - --- MAP posted-by: Jo-D