Connecticut handed Konstantinos “Kosta” Diamantis the keys to one of the biggest pots of money in state government. Hundreds of millions of taxpayer dollars for school construction flowed through his office. His job was to make sure that money built classrooms.
A federal jury says he turned it into a shakedown operation instead. Now he’s a convicted felon with a seven-year prison sentence, and he’s in Greece.
Who He Was
Diamantis spent 14 years as a Democratic state representative before Gov. Ned Lamont put him in charge of Connecticut’s Office of School Construction Grants and Review. From that chair, he controlled how hundreds of millions in state grants got distributed to towns building and renovating schools.
What Prosecutors Said He Did
A federal jury in Bridgeport convicted Diamantis on 21 counts, including conspiracy, bribery, extortion, and making false statements to investigators.
According to prosecutors, Diamantis extorted cash bribes from contractors. He steered masonry work to a company called Acranom Masonry and pressured towns to hire a firm called Construction Advocacy Professionals for management services, at inflated cost, according to CT Mirror.
Officials of two companies tied to the scheme have pleaded guilty to bribing Diamantis, CT Mirror reports, and they were still awaiting their own sentencing when he was sentenced.
He Ran Instead of Facing the Verdict
A jury convicted Diamantis in October 2025. That’s not in dispute. What happened next is the part that should make Connecticut taxpayers angry.
He was due to be sentenced on September 18, 2026. He didn’t show up. His attorney told the court he was in Greece, where he holds dual citizenship. Connecticut Public reported that he had surrendered his U.S. passport and used a Greek passport to travel. That dual citizenship now complicates any effort to bring him back to the United States.
Prosecutors told the court a flight home from Athens had been arranged and paid for. According to Connecticut Public, the federal prosecutor said he chose not to board.
On September 30, 2026, U.S. District Judge Stefan R. Underhill sentenced him anyway, in absentia, with the defendant nowhere near the courtroom. The judge handed down 84 months, seven years, plus three years of supervised release, according to the Connecticut Public report on the hearing.
That sentence landed below the 121-to-151-month range under the sentencing guidelines. The judge cited Diamantis’s age as a factor in going lower, according to the CT Mirror account of the ruling. His Farmington home was ordered forfeited to the federal government.
A Sentence With No One There to Serve It
Here’s the problem a courtroom can’t paper over: a sentence on paper means nothing if the man it’s attached to is sitting in Greece.
This next part is our read, not a reported fact: dual citizenship isn’t a loophole Diamantis found by accident. It’s a shield he already had, and he used it the moment a jury told him he was guilty. Whether Greek authorities ever hand him over is now a diplomatic question, not a legal one, and diplomatic questions move a lot slower than federal sentencing calendars.
Why This One Matters
This wasn’t a slush fund or a pet project. This was the office that decided which Connecticut towns got money to fix leaking roofs, replace boilers, and build new classrooms for kids. A jury found he treated that authority as leverage to squeeze bribes out of the contractors doing the actual work.
Every dollar extorted was a dollar that was supposed to go toward a school building. The contractors who paid him either passed that cost on somewhere else or ate it. Either way, it wasn’t free.
And now the man a jury convicted is thousands of miles away, and the state’s best hope for accountability is a piece of paper from a judge who sentenced an empty chair.
Read more fugitive-and-fraud case files, and tell us what you think, at themoraldecayindex.com. What’s your verdict on this one?