U.S. Democratic Party says more documents leaked, blames Russians

(This 13th September story was refiled to correct the headline and first paragraph to make clear more documents released from earlier breach, not a new hack) WASHINGTON (Reuters) - The head of the Democratic National Committee said on Tuesday the organization had been hacked by Russian state-sponsored agents who were trying to influence the U.S. presidential election and they may have released more documents after a similar leak in July roiled the party. A link to the documents was posted on Wik