Police investigated 2010 death of Diane Stewart after Ian Stewart was held for 2016 killing of Helen Bailey
A man found guilty of killing his fiancee and dumping her body in a cesspit in 2016 has been found guilty of murdering his first wife six years earlier.
Ian Stewart, 61, killed Diane Stewart in 2010 and told family, friends and medical professionals that she had died after having an epileptic seizure, Huntingdon crown court heard.
