Detectives are questioning a 34 year old woman over the murder of a Sandie Hartley in Rossendale.
The 60 year old was found dead with knife wounds at her home in Helmshaw on Friday night.
It's thought an employee called the police when she couldn't be contacted.
A court hearing of a woman charged with the murder of a businesswoman was halted after the accused collapsed to the floor.
Police investigating the murder of a 60-year-old woman in Helmshore say a 34-year-old woman has been arrested on suspicion of murder.