Officers have confirmed that a 39-year-old man from Haydock has now been arrested on suspicion of Section 47 assault.
He is still in hospital following treatment for injuries sustained during the incident, but will be questioned by officers when he is discharged.
Officers were called to reports of a stabbing by the ambulance service at about 1.20pm on Saturday afternoon at a property in Orchard Court, Clipsley Lane.
Two people were attended to by North West Ambulance Service, a 39-year-old man and a 27-year-old woman who it is believed had been involved in a domestic dispute.
The woman, who sustained head injuries, was taken to hospital for treatment. She has subsequently been arrested on suspicion of Section 18 assault.
The injured male, who has suffered stab wounds has undergone surgery.
The injuries to both parties are not believed to be life threatening at this stage.
Detectives are investigating the circumstances surrounding the incident and are appealing to anyone who may have information which could help them with their inquiries to come forward.
Crime Scene Investigators are currently carrying out forensic examinations at the scene and house-to-house inquiries are underway.
Anyone with information is asked to DM @MerPolCC, call 101 or contact Crimestoppers anonymously on 0800 555 111 quoting log 0443 of 5 January 2019.