A mum tragically texted her son about dinner plans not knowing that he had been stabbed to death.
The paramedic who stayed with the young victim as he died in the back of an ambulance revealed the moment that he was killed by a single stab wound.
Joanne, a paramedic for North West Ambulance Service, revealed what it was like to see the boy die in front of her and to see the message from his mum.
In a video, where she retold the story of the upsetting day, she said: "I've never seen so much blood come from a patient who has not had a frenzied attack on them - this was one stab.
"He's looking at me the whole time and I'm looking straight at him.
"We got him into the back of the ambulance and that's when his heart stopped."
A doctor had to enter the back of the ambulance to operate on the teen as soon as possible and as they cut his clothes off, Joanne set his phone down in front of her
As the doctor opened the boy's chest, he received a final text from his mum who didn't know what had happened.
Joanne said: "One thing that sticks with me is getting his mobile phone and putting it on the side right in front of me and just as we did that and the doctor opened his chest to try and see where the exit wound had gone in his heart, a text lit up on his phone from his mum.
"His mum said 'I've just come out the supermarket, I've got our food, I'll cook tea when we get home - shall I pick you up on the way? Love Mum'.
"We've got her son who's dead in front of us and we're trying to restart his heart while she's coming out the supermarket totally unaware of the terror that she was about to face."
The ambulance finally arrived at the hospital where the teenager was passed to the doctors and nurses.
As Joanne and her team were leaving, they saw a woman being brought into the hospital.
Joanne said: "As we were walking back towards the doors I could hear a scream. It wasn't just a high-pitched scream, it was a gutterish scream.
"I looked through the doors and I could see his mum being told exactly what had happened.
"She was screaming and crying and throwing herself on the floor with sheer, absolute devastation.
"I can't imagine what she must have been going through."
After hearing the screams Joanne went in the room and held the mum's hand and helped her off the floor.
She said: "She was begging us all - 'Please try again, please try again.'
"I just said to her, because I couldn't think of anything else to say, he wasn't on his own when he died - we were with him.
"That's all from one single, very thing, long stab wound. It's completely destroyed a whole family, all his friends - it's affected the police officer I work with, it affected the ambulance crew, it affected absolutely everyone and no one should have to ever go through that."
Sharing the video on their social media account, Cheshire Police said: "Joanne Hedges is a Senior Paramedic with @NWAmbulance and was first on the scene after a teenager had been stabbed.
"Although small, the single wound proved to be fatal."
