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Connecticut attorney general sues to revoke pension of convicted former official Kosta Diamantis

Attorney General William Tong moved to strip Diamantis of his state pension after the former official, who prosecutors say fled the country, was sentenced in absentia on corruption charges tied to school construction contracts.

Connecticut Attorney General William Tong filed a civil action Wednesday seeking to revoke the state pension of Kosta Diamantis, a former state official who was sentenced in absentia in federal court the same day on extortion, bribery, conspiracy and false statement charges, Tong's office said.

The charges stemmed from Diamantis' abuse of his state position overseeing school construction contracts, according to the attorney general's office. A jury found him guilty on Oct. 22, 2025. The office said he fled the country before a sentencing hearing initially scheduled for Sept. 17.

Under federal law, a conviction is considered final once a defendant is sentenced, the office said. Tong said Diamantis "was convicted of demanding bribes from contractors and lying to federal investigators."

A 2008 state law requires the attorney general to sue to reduce or revoke the pension of any state or municipal official convicted of, or pleading guilty to, a crime related to their office. The law covers embezzling public funds, felony theft from the state, bribery connected to public service and felonies committed with intent to defraud.

In deciding such a case, a court must weigh the severity of the crime, the amount of money lost, the degree of public trust placed in the official, the official's role in any fraudulent scheme and any other factors it considers just.

The attorney general's office said it has brought 32 cases under the law, including the one against Diamantis. Of the cases it has litigated, 12 ended with the pension revoked, 10 with a partial reduction and eight with no change, the office said.

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