Federal prosecutors in Florida filed a civil lawsuit against Donald Trump’s former campaign adviser Roger Stone on Friday, alleging Stone and his wife, Nydia, have failed to pay the federal government roughly $2 million in unpaid income taxes, penalties and interest. 

Prosecutors allege Stone and his wife owe $1,590,361 in unpaid income taxes, penalties and interest for the years 2007 through 2011, and that Stone owes $407,036.84 in income tax, penalties and interest for the 2018 tax year.  

The lawsuit claims the Stones entered into an installment agreement with the IRS in 2017 that required them to pay $19,485 per month toward their unpaid tax bill. But when Stone formed a trust after his 2019 indictment, the Stones purchased a home using funds that should have gone towards the payment plan, “intend[ing] to defraud the United States” of funds meant to pay off the tax debt, the complaint alleges. 

“They purchased the residence shortly after Roger Stone’s indictment and placed it in the name of the Bertran Trust just prior to defaulting on their installment agreement with the IRS,” the filing alleges. “The Stones have long owed back taxes, and they have been parties to numerous installment agreements, some of which were terminated by the IRS. They were aware that their default would result in IRS collection activity.”

Stone did not immediately respond to CBS News’ request for comment. 

Stone was found guilty in November 2019 of seven charges related to lying to Congress, witness tampering and obstruction related to former special counsel Robert Mueller’s investigation. He was sentenced to just over three years in prison, but former President Trump intervened days before he was set to go to prison, commuting his sentence. Mr. Trump then granted Stone a full pardon before he left office. 

Stone, 68, resides with his wife in Fort Lauderdale, Florida. 

—Robert Legare contributed reporting.