Tad Devine, who served as senior adviser to Sen. Bernie Sanders' (I-Vt.) 2016 campaign for president, got an unwelcome reminder of his political past Thursday: His name appears on numerous exhibits in the prosecution of Paul Manafort, the former chair of President Donald Trump's 2016 campaign.

Devine worked with Manafort on the 2006 and 2010 campaigns of Viktor Yanukovych for president of Ukraine. Yanukovych won in 2010, but he was forced from power in 2014 after concerns about his pro-Russian policies sparked a popular uprising. Yanukovych fled to Russia; he is wanted in Ukraine on charges of high treason.

Manafort faces trial in federal court starting July 24 on bank fraud and tax-related charges. The office of special prosecutor Robert Mueller released a list of more than 500 potential exhibits Thursday; the list includes 16 emails, email chains, memos and invoices involving Devine, Manafort and others in the years 2006, 2010-12 and 2014.

 The contents of the documents were not disclosed. The exhibit list includes the names of senders and recipients and subject lines. Two examples: "2010.02.03 Email T. Devine to P. Manafort re Election Night Speech" and "2010.02.15 Email T. Devine to P. Manafort, et al re Job Well Done."

According to the New York Times, Devine severed ties with Yanukovych in 2012 after the Ukrainian leader jailed a political opponent. Five of the emails included in the exhibit list were sent in 2014 — after Yanukovych's ouster — by Devine to Manafort associates Rick Gates and Konstantin Kilimnik. (Gates and Kilimnik have also been indicted by Mueller; Gates has reached a plea agreement and is cooperating with the investigation.)

Since the emails' contents have not been released, it's unclear why Devine was exchanging Ukraine-related communications long after his supposed departure and less than six months before he joined the Sanders campaign in late 2014.

Devine is a prinicipal in the Washington, D.C., political consulting firm Devine Mulvey Longabaugh, which operates domestically and internationally. He did not return a call from Seven Days.