A Belarusian model who claimed last year that she had evidence of Russian involvement in helping elect Donald Trump president was deported from Thailand on Thursday, police said. Anastasia Vashukevich along with seven co-defendants pleaded guilty this week in a case related to holding a sex training seminar in Thailand.

They were arrested almost a year ago in the seaside resort town of Pattaya, which is especially popular with Russian tourists. Thailand's immigration police chief Lt. Gen. Surachate Hakparn said most of the group left on flights shortly after noon, those going to Russia on one flight and those headed to Belarus on another.

Vashukevich and at least one of the other deportees hold passports from Belarus. While in custody, Vashukevich claimed to have recordings of Russian oligarch Oleg Deripaska talking about interference in the 2016 U.S. election, but never released them.

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Deripaska is close to Russian President Vladimir Putin, and also had a working relationship with Paul Manafort, Mr. Trump's former campaign manager who was investigated by special counsel Robert Mueller and convicted last year of tax and bank fraud. Earlier this month, Manafort's lawyers accidentally revealed in a court filing that Mueller has evidence Manafort shared polling data with an associate linked to Russian intelligence during the 2016 campaign.

The associate is Konstantin Kilimnik, who worked closely with Manafort for years promoting Russian-backed Ukrainian interests. As CBS News Washington correspondent Paula Reid reported, it was the first time a Trump official had been accused of sharing campaign information with Russian interests.

Vashukevich — also known on social media as Nastya Rybka — and her co-defendants were convicted of soliciting and conspiracy and given suspended 18-month prison terms. The group had said that they were conducting a class on sexual relationships.

Surachate said Russian self-styled sex guru Alexander Kirillov, Vashukevich's mentor in the sex training business, would take a Thursday night flight because no more seats were available earlier. In the early stages of their detention, the sex training group sent a note to the U.S. Embassy via an intermediary seeking help and political asylum.

Vashukevich indicated she would turn over the recordings she claimed to have if the U.S. could help secure her release, but later withdrew the offer, suggesting that she and Deripaska had reached an agreement. A public scandal erupted in early February last year when Russian opposition leader Alexei Navalny published an investigation drawing on Vashukevich's social media posts suggesting corrupt links between Deripaska and a top Kremlin official, Deputy Prime Minister Sergei Prikhodko.

Anastasia Vashukevich, a Belarusian model and escort who caused a stir last year after she was arrested in Thailand and said she had evidence of Russian interference in the 2016 U.S. presidential election, is pictured at an Immigration detention center before being deported in Bangkok, Thailand, Jan. 17, 2019. Reuters/Jorge Silva

The investigative report featured video from Deripaska's yacht in 2016, when Vashukevich, who has also worked as an escort, was aboard. On Wednesday in Washington, the U.S. Senate narrowly upheld a Treasury Department decision to lift sanctions from three companies connected to Deripaska.

The Treasury Department said the Russian companies have committed to separating from Deripaska, who will remain blacklisted as part of an array of measures announced in early April that targeted tycoons close to the Kremlin. Deripaska was one of 24 Russian officials and tycoons faced with sanctions imposed by the United States last year as Washington stepped up its condemnation of Russia's actions in recent years, including its 2014 annexation of Crimea, support for Syrian President Bashar Assad, hacking attacks and meddling in Western elections.

The metals tycoon controls a business empire with assets in aluminum, energy and construction and is worth $5.3 billion, according to Forbes magazine.