Editorial correction — September 20, 2026: Removed an unsupported prediction about the separate pending prosecution and dated the report of the missed sentencing hearing.
Konstantinos “Kosta” Diamantis was supposed to stand before a federal judge in Connecticut and hear his sentence for corruption. Instead, he called his lawyer the night before and said he was already in Greece.
He did not appear for the September 17, 2026 sentencing hearing, according to the reports cited below.
The Conviction
In October 2025, a federal jury in Bridgeport convicted Diamantis on 21 counts. The charges included bribery, extortion, and lying to federal investigators, according to CT Mirror.
Diamantis once served as Connecticut’s Deputy Budget Director and ran the state’s Office of School Construction Grants and Review. He was also a former Democratic state representative.
Prosecutors said the scheme ran from 2018 to 2021. Diamantis allegedly used his control over school-construction grants to extort bribes from private contractors. Two of those firms were steered toward roughly $8.5 million in contract work, according to CBS News.
What He Was Trusted To Do
This next part is editorial interpretation, not a direct claim from prosecutors. Diamantis held a position of real public trust. His job was to make sure state school-construction money went to qualified contractors, chosen on the merits. Instead, according to the jury’s verdict, he turned that authority into a tool for personal profit, squeezing bribes out of the very companies he was supposed to be overseeing fairly.
The Night Before Sentencing
Sentencing was scheduled for September 17, 2026, before U.S. District Judge Stefan Underhill. Prosecutors were asking for 10 to 12 years in prison, according to CT Public.
The night before that hearing, Diamantis called his attorney and said he was already in Greece. He would not be showing up.
Federal prosecutors told the court that Diamantis, a dual U.S.-Greek citizen who is barred from commercial flights out of the country, drove to Florida, took a boat to the Bahamas, then flew from Nassau to London before reaching Greece. He reportedly surrendered his U.S. passport and obtained a Greek one along the way, according to CBS News.
What Happens Now
Judge Underhill rescheduled sentencing for September 30, 2026. He made clear it will proceed whether or not Diamantis is in the room, per CT Public.
Getting Diamantis back to the United States will not be simple. Greece generally refuses to extradite its own citizens, a complication reported by Greek Reporter.
Casting Himself as the Victim
Diamantis sent his lawyer a 10-page email denying any wrongdoing. In it, he accused Governor Ned Lamont and the Justice Department of running a politically motivated, “weaponized” prosecution against him, according to CT Mirror.
Connecticut Attorney General William Tong did not see it that way. He publicly condemned Diamantis’s flight as a betrayal of the public’s trust, per the same report.
Here’s the editorial read: a unanimous jury verdict is not a political opinion. Failing to appear for sentencing while portraying the conviction as persecution avoids the accountability the court process is meant to impose. That is our assessment of his reported conduct, not a finding about the separate pending allegations.
A Second Case Still Waiting
Diamantis isn’t done with federal court, even if he’s not in the country. He still faces a separate pending case accusing him of taking bribes to kill a state audit into a Bristol optometrist suspected of Medicaid fraud, according to CT Mirror.
That separate case remains pending in the cited reporting. The decision to proceed with sentencing in the corruption conviction does not establish what will happen in the separate prosecution. Those allegations have not been established by the conviction discussed above.
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