WikiLeaks is in the process of publishing more than 500,000 Saudi diplomatic documents to the Internet, the transparency website said Friday, a move that echoes its famous release of U.S. State Department cables in 2010.

WikiLeaks says in a statement that it has already posted roughly 60,000 documents. Most of them appeared to be in Arabic.

There was no immediate way to verify the authenticity of the documents, although WikiLeaks has a long track record of hosting large-scale leaks of government material. Many of the documents carried green letterhead marked "Kingdom of Saudi Arabia" or "Ministry of Foreign Affairs."

The Associated Press was not immediately able to reach anyone whose phone numbers or email addresses were published in the various documents, but WikiLeaks spokesman Kristinn Hrafnsson told AP he was confident that they were genuine. He declined to comment on the documents' source.

The Saudi Embassy in Washington did not immediately return messages seeking comment.