Greek Finance Minister Yanis Varoufakis yesterday admitted he had recorded a eurozone finance ministers meeting and criticised media for reporting “lies and innuendos” on what transpired at that April 24 Eurogroup gathering.

The outspoken minister told the New York Times Magazine he had taped the confidential meeting in Riga, drawing criticism that he was undermining Greece’s efforts to secure aid from lenders.

“In the absence of minutes, I often record my interventions and responses on my mobile phone, especially when I ad lib them,” Varoufakis said in his blog and to Britain’s BBC, adding that he used the recordings to help prepare briefings for the Greek Cabinet.

“I did the same in the Riga Eurogroup meeting and, afterwards, back in Athens, used that recording to work on my brief to my colleagues,” he wrote. Since assuming his post in January, Varoufakis has annoyed many euro zone colleagues due to his brash style and sharp-tongued barbs against creditors at a time when Greece needs their help to avert bankruptcy.

Eurogroup rules do not explicitly prohibit participants from recording talks as long as the contents are kept confidential. But the disclosure prompted howls of disbelief from Greek media and the Opposition who said that secretly recording his peers might undercut Greece’s efforts to build alliances.

A columnist for Greek newspaper Eleftheros Typos wrote: “We all should care that the country’s finance minister, at a most crucial moment, states without shame that he secretly recorded all dialogues and discussions at the last Eurogroup in Riga, which was his Waterloo.”

Observers of the meeting in the Latvian capital said he appeared isolated and noted that he did not attend a finance ministers’ dinner in the evening.