Brother-sister duo who stabbed man to demise in a ‘cold-hearted assault’ then casually went off to work and hospital are discovered responsible of homicide

A brother and sister have both been found guilty of murdering a 21-year-old man in a ‘brutal’ knife attack before casually leaving the scene ‘as if nothing had happened’.

Bank worker Mya Marsh, 23, and her sibling Isaiah Marsh, 20, fatally stabbed Minister Enfrence in Medway Grove, Kings Norton, Birmingham, just before 10am on November 5, 2024.

Mya was caught on film as she passed a knife to her brother during the ‘cold-hearted attack’ on Mr Enfrence, who suffered more than 20 wounds to his body, arms, hands and head.

The 21-year-old managed to flee the scene but, due to the severe nature of his injuries, collapsed nearby. Despite receiving assistance from two members of the public, he was pronounced dead later that day.

After the attack, Mya walked away from the scene with Mr Enfrence’s bike and casually went to work, while Isaiah took himself to hospital for injuries to his hands. 

Both siblings also attempted to hide evidence from the callous attack by tossing two knives in a wheelie bin, alongside their clothing. 

Birmingham Crown Court was told Mr Enfrence may have been attacked on the city street during an argument because Mya had been waiting to buy cannabis or over a damaged bicycle.

Siblings Mya Marsh, 23, (pictured), and Isaiah Marsh, 20, were found guilty of murdering Minister Enfrence, 21, in Medway Grove, Kings Norton, Birmingham, just before 10am on November 5, 2024

Isaiah Marsh (pictured) cycled to hospital after the killing

Minister Enfrence, 21, (pictured), was killed in an ‘unprovoked, senseless and violent’ attack. While he managed to flee the scene, due to the nature of is injuries, he collapsed nearby and was pronounced dead later that day

Mya was arrested the day after the murder, while Isaiah handed himself in to police in the hours that followed. 

On Monday, jurors deliberated for less than four hours before unanimously convicting the siblings of murder after their trial was shown CCTV footage of Mr Enfrence being repeatedly stabbed.

Isaiah Marsh, 21, claimed he acted in self-defence, while his sister said she did not believe her brother would use the knife to stab the victim.

The defendants, both of Teviot Grove, Kings Norton, denied murder and manslaughter.

Jurors heard the stabbing took place just around the corner from the joint home of the defendants, who both knew Mr Enfrence as an ‘associate’ and had had previous phone contact with him.

Opening the case against the pair at the start of the trial last month, prosecutor Jennifer Josephs KC described the attack as ‘unprovoked, senseless and violent’.

Ms Josephs added: ‘It is apparent that the two defendants knew Minister and knew him before the incident took place.

Pictured: flowers and tributes left for Mr Enfrence. In a statement released after his heartbreaking death, Mr Enfrence’s family said the sudden loss of their son had left ‘a hole in our hearts that cannot be filled’

Pictured: police at the scene in Medway Grove, Kings Norton Birmingham. Following the attack, Mya went to her workplace ‘as if nothing had happened’ and slept at a different address in the evening, while Isaiah told police he had lost his phone when he handed himself in

‘There is no dispute as to who was there. Much of the CCTV comes from nearby houses.’

Mya had armed herself with a kitchen knife, which she held in the street and could be seen brandishing while shouting, Ms Josephs said, while Mr Enfrence was seen to be empty-handed.

As well as alleging that the male defendant ‘grabbed’ Mr Enfrence before he carried out a ‘frankly brutal’ stabbing, Ms Josephs said of the female defendant: ‘She joins in, we say. She is on top of them and hands her brother, we say, a knife.’

After the killing, Ms Josephs said that Mya had gone to her workplace ‘as if nothing had happened’ and slept at a different address in the evening, while Isaiah told police he had lost his phone when he handed himself in.

In Birmingham Crown Court, Isaiah left the dock and walked through a door towards the cells shortly after the verdicts were returned, while his sister stayed in court to listen to comments made by the judge to barristers.

Judge Simon Drew KC remanded both defendants in custody until sentencing on Thursday.

At Birmingham Crown Court (pictured) after four hours of deliberation jurors unanimously convicted the siblings of murder after their trial was shown CCTV footage of Mr Enfrence being repeatedly stabbed

Detective Inspector Dan Jarratt, from West Midlands Police’s Homicide Team, described the murder as a ‘brutal and cold-hearted attack in broad daylight’, describing the twins as having a ‘nonchalant attitude’ towards the murder of Mr Enfrence 

Shortly after his death, Mr Enfrence’s family shared a heartbreaking statement that read: ‘Minister, you have been taken from us so abruptly and this has made an impact in our lives leaving a hole in our hearts that cannot be filled.

‘But we are happy to say you are now with the Lord in a better place. We will meet you again in eternity.’

Detective Inspector Dan Jarratt, from West Midlands Police’s Homicide Team, said: ‘Minister’s murder has had a devastating impact on all who knew and loved him, especially his family.

‘This was a brutal and cold-hearted attack in broad daylight.

‘The vicious nature of the attack is highlighted by the number of wounds that Minister suffered. The callous nature from the two shown afterwards further highlighted the nonchalant attitude after taking the life of a man.

‘Nothing will ever bring Minister back, but I hope that today’s verdicts will provide a level of comfort to his family and loved ones.’

The pair will be sentenced at a later date.