Washington, D.C., bar investigators have filed disciplinary charges against three lawyers who aided Donald Trump ally Sidney Powell’s campaign to mount discredited legal challenges to the 2020 election results.

Filings made public Friday accused attorneys Juli Haller, Lawrence Joseph and Brandon Johnson of making knowingly false representations to courts about a slew of lawsuits they filed in the weeks after the 2020 election.

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The new charges are the latest in a series of disciplinary proceedings filed across the country against attorneys who directly and indirectly aided Trump’s bid to subvert the 2020 election. Trump campaign lawyer Jenna Ellis was admonished by Colorado authorities after admitting to making false representations about election fraud in 2020. John Eastman, an architect of Trump’s last-ditch bid to block Biden’s Electoral College win, was found culpable for violating professional ethics after a lengthy trial in California and faces a final judgment in the next few weeks. And Rudy Giuliani was suspended from practicing law in New York and Washington, D.C. after proceedings that questioned his 2020 work on Trump’s behalf in Pennsylvania.