A sock containing the saliva of the alleged victim in a murder trial was discovered by the bed where the pregnant mother-of-four was found strangled.

A sock containing the saliva and blood of the alleged victim in a murder trial might have been in her mouth, a forensic scientist told the Central Criminal Court today.

The Derry man on trial at the Central Criminal Court for the murder of the mother of his unborn son has admitted strangling her, the court has heard.