He did not elaborate.The bug was found in a routine search ahead of his visit to London on June 16, he told reporters.The microphone was found in the office of the ambassador Ana Alban.
Patino said he was not insinuating that the bug was linked to the saga surrounding fugitive US intelligence leaker Edward Snowden, who has applied for asylum in Ecuador.
Snowden is wanted by the United States on charges of espionage for revealing a massive phone and Internet surveillance programme. Assange, whose organization leaked a vast trove of diplomatic cables and Iraq and Afghanistan war logs a few years ago, has been staying in the Ecuadoran embassy in London for a year.
He faces questioning over sexual assault allegations in Sweden, and fears the Swedes will hand him over to the Americans.
During his visit to London, Patino met with his British counterpart William Hague but no agreement on the Assange case was reached.
Britain is refusing to grant Assange safe passage out of the embassy so he can travel to Ecuador.
WikiLeaks has been registered as a political party in Australia and will field candidates in the upcoming Senate election. The approval came Tuesday from the Australian Election Commission.
Julian Assange, the co-founder of the scandalous whistleblower website, said he was going to run for a parliament seat, although it is not clear how he would be able to assume office while staying at the Ecuadorian embassy in London
WikiLeaks has said that if Mr. Assange is elected but is unable to return to Australia, another candidate could fill his spot.
Assange has been holed up in the UK capital for a year and faces arrest by British police on behalf of the government of Sweden, where he is wanted for questioning related to alleged sexual assault.
A federal election is currently scheduled for September 14. However the newly installed Prime Minister, Kevin Rudd, can change the date favored by his predecessor, Julia Gillard.
Voice of Russia, Hollywood Reporter, AFP