PITTSBURGH (AP) – A lawyer for a former western Pennsylvania medical researcher convicted in the cyanide poisoning death of his neurologist wife is seeking a new trial.

Sixty-six-year-old Robert Ferrante is serving life in prison since an Allegheny County jury convicted him last fall in the April 2013 death of Dr. Autumn Klein.

He has since appealed his conviction.

Attorney Chris Eyster said Tuesday he plans to use information from scientists who say that leftover chemicals from creatine that Klein was taking could have produced a false positive for cyanide in her blood tests.

Eyster also argues that the court erred by not granting Ferrante a hearing after sentencing when the state allegedly failed to disclose problems with the lab that performed the tests.

Join The Conversation On The KDKA Facebook Page
Stay Up To Date, Follow KDKA On Twitter

(© Copyright 2015 The Associated Press. All Rights Reserved. This material may not be published, broadcast, rewritten or redistributed.)