The former leader of Austria’s far-Right Freedom Party (FPÖ) is under criminal investigation over a corruption video that brought down the country’s government, it has emerged.

Heinz-Christian Strache resigned as Austrian vice-chancellor last month after a video was made public in which he appeared to offer government contracts to a Russian oligarch in return for financial support.

Public prosecutors confirmed this week that he is under criminal investigation on suspicion of breach of trust in connection with allegations which emerged in the video.

Two other Freedom Party politicians, Johann Gudenus and Marcus Tschank, are also under investigation in connection with the video, prosecutors said.

Lawyers for Mr Strache refused to comment, saying: “We cannot comment on ongoing criminal proceedings”.

The scandal, which has become known in Austria as “Ibizagate”, has already brought down the government of former chancellor Sebastian Kurz and left Mr Strache’s career in tatters.