A man scarred his partner for life after smashing her head with a glass object.
Christopher Milligan, 35, turned on Caroline McCormack, 29, at a flat in Glasgow’s Thornliebank on September 1, 2019.
Milligan lashed out after Caroline intervened on him attacking her 25-year-old younger sister Laura.
Caroline needed eight stitches for her head wound while Laura suffered bruising to her face.
On Tuesday, Milligan pleaded guilty at Glasgow Sheriff Court to assaulting Caroline to her injury and permanent disfigurement.
He also admitted the assault to Laura’s injury and will be sentenced next month.
The court heard that Milligan and Caroline were an “on-off” couple that were together for two years before the incident.
The trio were at a friend’s house drinking alcohol before an argument broke out.
Milligan then brandished a kitchen knife towards Laura.
Prosecutor Mark Allan said: “Caroline heard the disturbance and entered the room to see Milligan on top of her sister repeatedly punching her head.
“Caroline intervened to push Milligan away but he struck her to the head with a glass object.
“This left her bleeding from her head before Milligan departed the scene.”
The women were taken to the city’s Queen Elizabeth University Hospital for treatment.
Mr Allan said: “Caroline had a 4.5cm wound to the right side of her forehead which was closed by eight stitches.
“It will leave a permanent scar on her head.
“Laura had a one-centimetre wound on her head and needed two stitches on her scalp.
“She also had bruising to her forehead and cheekbones.”
Neal McShane, defending, told the court: “He asked me to say he is ashamed by what occurred.”
Sheriff Iain Fleming remanded Milligan in custody pending background reports.