The reports come amid an international outcry over allegations the US has spied on the telephone communications of as many as 35 foreign leaders.
A document from National Security Agency leaker Edward Snowden, published this week by German magazine Der Spiegel, describes a signals intelligence program called ``Stateroom'' in which US, British, Australian and Canadian embassies secretly house surveillance equipment to collect electronic communications.
Those countries, along with New Zealand, have an intelligence-sharing agreement known as ``Five Eyes.''
Associated Press