BEIJING (Reuters) - China's central bank will continue to conduct spot investigations on bitcoin exchanges, its Beijing head office said on Wednesday, in a statement on its website.<div><a href="http://feeds.reuters.com/~ff/reuters/technologyNews?a=m692IfNXHJw:nJn_qDBeVLw:yIl2AUoC8zA"><img src="http://feeds.feedburner.com/~ff/reuters/technologyNews?d=yIl2AUoC8zA" border="0" /></a> <a href="http://feeds.reuters.com/~ff/reuters/technologyNews?a=m692IfNXHJw:nJn_qDBeVLw:V_sGLiPBpWU"><img src="http://feeds.feedburner.com/~ff/reuters/technologyNews?i=m692IfNXHJw:nJn_qDBeVLw:V_sGLiPBpWU" border="0" /></a> <a href="http://feeds.reuters.com/~ff/reuters/technologyNews?a=m692IfNXHJw:nJn_qDBeVLw:-BTjWOF_DHI"><img src="http://feeds.feedburner.com/~ff/reuters/technologyNews?i=m692IfNXHJw:nJn_qDBeVLw:-BTjWOF_DHI" border="0" /></a></div><img src="http://feeds.feedburner.com/~r/reuters/technologyNews/~4/m692IfNXHJw" height="1" width="1" alt="" />