Anti-secrecy group WikiLeaks released a trove of documents Friday titled "Target Tokyo" detailing alleged U.S. National Security Agency's snooping on the Japanese government and businesses — just as negotiators from 12 nations, including Japan and the U.S., hope to wrap up the Trans-Pacific Partnership.

In a press release, WikiLeaks claimed to publish a tranche of what appeared to be four NSA reports marked top secret that reveal Japanese talks on climate change issues and international trade.

"In these documents we see the Japanese government worrying in private about how much or how little to tell the United States . . ." WikiLeaks founder Julian Assange said in an accompanying statement.