SBS European Correspondent Brett Mason confirmed Sediuk was the notorious entertainer who invaded the stage at this year's song content.
Ukrainian police have detained a Ukrainian prankster for jumping onto the stage at the Eurovision Song Contest and dropping his pants while singer Jamala was performing, Interior Minister Arsen Avakov said on Sunday.
It was a brief embarrassment for Australia who have been invited to perform at the competition for the past three years by the host country on a wildcard entry.
Seduik clearly hasn't learned his lesson, and has reportedly been detained for 72 hours since the events at the Eurovision. Writing on Facebook, the politician advised Sediuk from repeating his prank "in the prison cell of the temporary detention facility".
He once struck actor Brad Pitt in the face as he signed autographs in Los Angeles.
At the 2013 Grammy Awards, Sediuk also stormed the stage when Adele was awarded the "Best Solo Performance" prize, receiving a six-month suspended sentence after pleading no contest.
Eurovision, in which Australia competes despite not being in Europe, was won by Portuguese Salvador Sobral, 27. Bulgaria came second and Moldova third.