Manchester Arena bomber Salman Abedi urged a student 'do chemistry so you can build a bomb' and described jihad as 'beautiful', a jury heard.
Two years after the alleged comments Salman Abedi detonated a bomb in his rucksack packed with deadly home-made TATP explosives in the foyer of Manchester Arena as parents were gathering to collect children who were leaving an Ariana Grande Concert.
He killed himself and 22 others, and injured hundreds more, in the blast on May 22, 2017. His brother Hashem Abedi is standing trial at the Old Bailey in London where he denies helping his sibling by sourcing 'precursor chemicals' used in the manufacture of TATP and shrapnel for the bomb.
On the 11th day of the trial, the jurors heard evidence from a teenage associate of the Abedi brothers, a student, who described hearing Salman Abedi express support for 'jihad'.
In a police video interview played in court, the witness, who cannot be named for legal reasons. recalled a trip in Hashem Abedi's car when Salman Abedi was also on board.
Salman Abedi, according to the witness, had said: "Do chemistry so you can build a bomb."
The Arena bomber had talked about 'martyring', how being a martyr was 'something big' and that 'jihad is beautiful', the jurors were told.
The young witness said he 'didn't used to think he was an inspiration in any way shape or form' and that he actually thought Salman Abedi was 'a bit dopey'.
He said he 'started laughing' when he heard the comment and that Salman Abedi may also have laughed too.
"To be honest even if he had said to me 'I'm going to build a bomb' I wouldn't have believed him. That's how insane it is, you know what I mean?" said the witness, who went on that he did not believe the Abedi family was 'that type'.
He told the interviewing police officers that Salman Abedi would tell stories 'about prophets' and had told him: "Life's temporary, make sure you don't get lost."
The court heard that Salman Abedi had told the young associate: "Die with no judging and you go straight to heaven."
Later, the jurors heard from another witness, Ibrahim Khalifa, who said he had lived at the Abedi family home on Elsmore Road in Fallowfied in August 2015.
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He had known Hashem Abedi from Burnage High School, he said.
Mr Khalifa told the court that during a meal at the Abedi home Salman Abedi had 'shown empathy' to ISIS during a TV news story on Iraq and had complained about how the media had 'attacked' them.
He said Hashem Abedi was 'in agreement' with his brother although others at the dinner had disagreed.
The jurors were told the Abedi family had plans to leave the country and Mr Khalifa said the next time he saw them was in April 2017 when he was sent to their home by his father in Libya to collect some post.
Asked about the brothers' appearance, Mr Khalifa said: "I was a little surprised. At the time I was living there Salman was going to the gym. In April he had lost quite a lot of weight.
"He was wearing traditional Islamic clothing."
Under cross-examination by Stephen Kamlish QC, defending Hashem Abedi, it was suggested to Mr Khalifa that he could not recall his client saying anything for or against ISIS and that others had made the comments.
The witness accepted that 'could be true'.
Hashem Abedi, 22, from Fallowfield, denies 22 counts of murder, one charge of attempted murder concerning those who were hurt but survived and a charge that he conspired with Salman Abedi to cause an explosion.