An Austrian politician resigned after he was caught on video apparently offering government contracts in exchange for political help from a woman saying she represented a Russian oligarch.

Heinz-Christian Strache insisted the scandal was a “political hit-job” and claimed after the video surfaced that he would eventually be exonerated.

Strache, 49, admitted during a Saturday news conference that he was “acting like a teenager” in the damaging video, behavior he called “stupid, irresponsible and a mistake.”

The clip, reported Friday by German outlets Spiegel and Süddeutsche Zeitung, shows Strache in a vacation house on the Spanish island of Ibiza with a group that included a woman who claimed to be the niece of a Russian oligarch.

The woman offered to buy a major stake in an Austrian newspaper so she can make it support Strache’s far-right Freedom Party. Strache is heard apparently offering public contracts to the woman in exchange.

At one point, Strache whispers to another Freedom Party official in the room, “Trap. Trap, it’s a trap.” But the friend assures Strache, “It’s not a trap.”

The report of the video sent Austria’s coalition government into crisis. Late Saturday, Chancellor Sebastian Kurz called for new elections.