Kelly Pearce, 36, of North Avenue, Canvey, was taken to the Royal London Hospital with a serious neck injury and died soon after 7.30pm.
Detectives from Essex Police said they urgently need to speak to Anthony Ayres, 48, in connection with the investigation. He is described as around 5ft and of average build.Just another domestic that couldn't be foreseen?
The Press Association understands Ayres was jailed for life at the Old Bailey in 1994 after being found guilty of killing his then partner Dawn Wisdom.
Secretary Ms Wisdom, 30, was strangled to death by Ayres, then aged 27, at her East London flat in September 1993 after she tried to end their relationship.Hmmm....
Nick Alston, police and crime commissioner for Essex, said he was "appalled and deeply saddened" by the latest killing.
He added: "This tragedy must make us question and challenge the continuing prevalence of violence against women and girls in our society. Such horror and loss of life is intolerable.
"There are also profound questions for the entire criminal justice system about sentencing and the regulatory framework surrounding the management of dangerous offenders in our communities.
"I believe these questions must be urgently addressed at the national, as well as the local, level."
He said the case underlines the need for organisations like the police, probation service and NHS to share information about vulnerable people.'Vulnerable people'?
Ms Pearce's family issued a statement saying they had lost a "loving mother and daughter who was big hearted and full of life".
They added: "Kelly was blessed with a loud and bubbly personality and she was often heard before she was seen.
"Although Kelly faced struggles in her tragically short life, we will choose to remember her the way that she was at her best - full of life and never afraid to show affection for the people that she loved."Ah. I can read between those lines.