An Ohio doctor convicted of killing his wife with cyanide claims errors at his trial turned jurors against him.

In an appeal, the lawyer for Yazeed Essa (EE'-suh) contends the judge should not have allowed testimony about Essa's extramarital affairs and his behavior after his wife died.

The Plain Dealer newspaper reports Tuesday that attorney Stephen Miles filed a brief with a state appeals court last month. Miles argues the judge should have declared a mistrial over testimony the lawyer says questioned Essa's character but had nothing to do with the 2005 death of Rosemarie Essa.

Prosecutors are preparing a response.

Essa was convicted in March of poisoning his wife's calcium supplement. Prosecutors said the Cleveland-area doctor wanted to be with his mistress.


Information from: The Plain Dealer, http://www.cleveland.com