WASHINGTON: A top U.S. intelligence agency has built its own secret "Google-like" search engine for about two dozen government agencies to search information through over 850 billion communications records, including phone calls, emails and internet chats, a media report said.

Reported by 'The Intercept' — a recently launched website — from the classified documents leaked by whistleblower Edward Snowden, the Google type secret search engine is considered to be key to searching information from over 850 billion records that the U.S. government collects over multiple agencies.

It was a mastermind of the recently retired National Security Agency Director Gen Keith Alexander. Christened 'ICREACH' the search engine REACH contains information on the private communications of foreigners and, it appears, millions of records on U.S. citizens who have not been accused of any wrongdoing, said The Intercept.

Citing various classified documents under its possession, it said the search tool was designed to be the largest system for internally sharing secret surveillance records in the U.S. capable of handling two to five billion new records every day, including more than 30 different kinds of metadata on emails, phone calls, faxes, internet chats, and text messages, as well as location information collected from cellphones.

The Director of National Intelligence acknowledged the existence of such a search engine.

READ MORE: Motorola: India Business Doing Phenomenally Well

U.S. Spy Agency Built Own Secret 'Google-Like' Engine