"I'm 100 per cent sure Sam put that knife through Justin's leg."

These were the words of a key witness, whose police interview was played for jurors at Winchester Crown Court on Wednesday, October 23, during an ongoing Basingstoke murder trial.

The recording was presented on the third day of the trial of Samuel Dewulf, accused of fatally stabbing Justin Green in a brutal attack on April 29 at Braddock Court, Chapel Gate.

Dewulf has pleaded not guilty to the murder charge.

The trial, which began on Monday, October 21, saw jurors watch a police interview of a key witness Dean Caparn.

Police attend Braddock Court in Basingstoke following the incident on April 29Police attend Braddock Court in Basingstoke following the incident on April 29 (Image: Newsquest) READ MORE: First live witness appears in court in Chapel Gate murder trial 

In his police interview, which took place on May 3—just four days after the incident—Mr Caparn described in detail how tensions in the flat escalated that day.

Mr Caparn can be heard telling police that Dewulf armed himself with two kitchen knives, scraping them together in a threatening manner before the fatal stabbing.

The witness said he heard Mr Green shout, "F**k Sam, what are you doing?"

When he turned to look, Mr Caparn said, he saw Dewulf pulling a knife out of Mr Green’s leg.

“I’m 100 per cent sure Sam put that knife through Justin’s leg,” Mr Caparn told police.

He went on to describe how Mr Green collapsed onto the floor, bleeding profusely, as Dewulf fled the scene.

Dewulf later returned briefly to retrieve his phone.

Mr Caparn can be heard telling police that he told Dewulf that Justin was “pissing with blood” and that he should dial 999, but Dewulf replied “f**k him” and left the flat. 

Following the attack, Mr Caparn dialled 999 and attempted to save Mr Green’s life by administering CPR under the guidance of the emergency operator.

A recording of the call was played to the court, while Mr Caparn sat in the witness box.

The call captured Mr Caparn’s efforts to resuscitate Mr Green, who was mostly unresponsive.

SEE ALSO: Chapel Gate murder trial: Prosecutors detail fatal stabbing

Despite his attempts, Mr Green was pronounced dead at the scene by paramedics.

Mr Caparn also explained that both Dewulf and Mr Green were part of a group of crack cocaine users, with disputes over money frequently occurring within their circle.

The court adjourned early on Wednesday and will resume on Thursday at 10.15am.