A charity is being prosecuted by the Health and Safety Executive following an investigation into the death of care worker Ashleigh Ewing.
Ewing, 22, was an employee of Sunderland-based Mental Health Matters when she was stabbed by Ronald Dixon, a paranoid schizophrenic, after she visited his flat in Newcastle alone in May 2006.
Dixon is currently detained at Rampton Hospital after pleading guilty to her manslaughter on the grounds of diminished responsibility in October 2007.
The HSE has confirmed it will be prosecuting Mental Health Matters for an alleged breach of health and safety law.
If the case is referred to the Crown Court, the charity could face a maximum of an unlimited fine.
A spokesman for Mental Health Matters said it would be "inappropriate" for the charity to comment as proceedings were pending.
The hearing is due to begin at Newcastle Magistrates Court on 28 April.
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