WikiLeaks slammed Google for waiting two and a half years to notify members of the anti-secrecy group that it had turned over their private emails and other information to the U.S. government.

In a letter to Google, lawyers representing WikiLeaks said they were "astonished and disturbed" by Google's actions relating to search warrants it received from federal law enforcement officials and asked for a full accounting of the information Google gave the government.

The Centre for Constitutional Rights on behalf of WikiLeaks wrote to  Google Executive Chairman Eric Schmidt and General Counsel Kent Walker that it was too late for our clients to have the notice they should have had, they are still entitled to a list of Google's disclosures to the government and an explanation why Google waited more than two and a half years to provide any notice.

WikiLeaks was in the public spotlight in 2010 when it published a trove of classified government information, including leaked U.S. diplomatic cables.

Google notified three members of WikiLeaks on December 23, 2014 that it had provided "all of their email content, subscriber information, metadata and other content" to law enforcement officials more than two years earlier.

Apparently the government had a warrants for an investigation concerning espionage, conspiracy to commit espionage and the theft or conversion of property belonging to the U.S. government, among other items.

Google said in a statement on Monday that it has a policy of informing users about government requests "except in limited cases, like when we are gagged by a court order, which sadly happens quite frequently."

Google has pushed to unseal all the documents related to the investigation.