[HIGHLIGHTS] Four years after the Ibiza scandal: The man who brought down Austria's vice

Ribarich says he witnessed how Strache used party money to fund his lifestyle. He says he documented the false receipts for Strache.

Strache was forced to resign in May after the revelations were made public. The investigation into Strache's finances is still ongoing, says Ribarich. The case is one of the biggest scandals to hit Austria in recent years, he says. The other is the case of the former Austrian Chancellor Joachim Low, who is accused of embezzling millions.