A man has been jailed for life after murdering his ex-girlfriend in Greenwich, following a campaign of stalking and harassment that ended in a fatal knife attack in her home.
Yurii Muzyka, 34, of Burlington Road, New Malden, was sentenced at the Old Bailey on Friday, 29 May, after being found guilty of murdering Halyna Hoisan, 29, and possessing an offensive weapon. He was ordered to serve a minimum term of 30 years behind bars.
The court heard that Muzyka attacked Ms Hoisan in her flat on Tyler Street, Greenwich, on the evening of Wednesday, 27 August 2025, after discovering she was with another man. Police said he kicked down the door armed with a knife and a chisel before stabbing her six times in the chest. Their three-year-old daughter was in the property at the time but was found asleep in another room.
After the assault, Muzyka filmed a selfie video beside Ms Hoisan as she lay dying on the floor. He then stabbed himself before police arrived. Emergency services were called to the scene at about 10.20pm, but Ms Hoisan was pronounced dead at the property.
The court heard that Ms Hoisan had left the relationship in April 2025 and had since been subjected to stalking and abuse. Officers said she had secured a non-molestation order against Muzyka just a week before the killing, after he continued to harass her and track her movements. Investigators found a tracking device hidden in their young daughter’s scooter, which Muzyka used to monitor her whereabouts.
Police also said Muzyka had become fixated on his former partner after she began a new relationship. On the day of the murder, he bought a knife and recorded videos expressing anger about her seeing other men. Detectives said the timing of his actions suggested the attack was premeditated.
Following his arrest, Muzyka was taken to hospital with self-inflicted injuries. He later went on trial at the Old Bailey, where jurors heard evidence about his controlling behaviour, stalking and the circumstances leading up to the killing.
Speaking after sentencing, police described Ms Hoisan’s death as a horrific case of violence against women and girls. Officers said the investigation had shown the devastating impact of Muzyka’s obsession and the danger posed by his repeated abuse.
The killing has prompted renewed concern about domestic abuse, stalking and coercive control, with campaigners and police continuing to warn that victims should be believed and protected at the earliest opportunity.
