UPDATE 1-Tokio Marine to buy U.S. insurer Pure Group for about $3 bln-source <!-- no image --> <div>Japan's Tokio Marine Holdings Inc is buying U.S. insurer Pure Group for about 320 billion yen ($3 billion), a source said.<div class="feedflare"> <a href="http://feeds.reuters.com/~ff/reuters/UKBankingFinancial?a=9Wg4vc-MX38:L4LTjIsDmI8:yIl2AUoC8zA"><img src="http://feeds.feedburner.com/~ff/reuters/UKBankingFinancial?d=yIl2AUoC8zA" border="0"></a> <a href="http://feeds.reuters.com/~ff/reuters/UKBankingFinancial?a=9Wg4vc-MX38:L4LTjIsDmI8:V_sGLiPBpWU"><img src="http://feeds.feedburner.com/~ff/reuters/UKBankingFinancial?i=9Wg4vc-MX38:L4LTjIsDmI8:V_sGLiPBpWU" border="0"></a> <a href="http://feeds.reuters.com/~ff/reuters/UKBankingFinancial?a=9Wg4vc-MX38:L4LTjIsDmI8:F7zBnMyn0Lo"><img src="http://feeds.feedburner.com/~ff/reuters/UKBankingFinancial?i=9Wg4vc-MX38:L4LTjIsDmI8:F7zBnMyn0Lo" border="0"></a> </div><img src="http://feeds.feedburner.com/~r/reuters/UKBankingFinancial/~4/9Wg4vc-MX38" height="1" width="1" alt=""></div> Posted by Reuters