Warning: this article includes the image and name of an Aboriginal person who has died.
Video of an Indigenous teenager on a bus that took him to the site where he was allegedly chased down and murdered with a metal pole has been played for a jury.
Cassius Turvey, a 15-year-old Noongar Yamatji boy, died in hospital 10 days after prosecutors say he was chased, knocked to the ground and "deliberately struck to the head with a metal pole" in Perth's eastern suburbs on October 13, 2022.
Aleesha Louise Gilmore, 23, her boyfriend Jack Steven James Brearley, 23, and his mates Brodie Lee Palmer, 29 and Mitchell Colin Forth, 26, are on trial in the West Australian Supreme Court for Cassius' murder.
Prosecutor Ben Stanwix played CCTV footage for the jury on Thursday which was recorded at the Midland train station about 3.55pm.
It showed Cassius dressed in a green school uniform t-shirt and dark shorts with a black bag getting onto the 315 bus with a large group of teens.
He's tall and calm and looks like a student on his way home after a day at school.
The jury was also shown CCTV recorded inside the bus.
Cassius stands quietly near the rear doors with his right hand wrapped around a yellow pole to steady himself.
With his backpack strap over his left shoulder, he appears deep in thought as others in the group of 19 young people talk around him.
Mr Stanwix has previously said the students travelled to Middle Swan and got off the bus opposite a large so-called green space near a TAFE college about 4.05pm.
CCTV footage from the train station also showed Palmer's Ford Ranger ute arrive in the car park about a minute after the 315 bus drove away.
A young man with a mullet haircut wearing a light blue t-shirt and shorts, who was previously described as Brearley by Mr Stanwix, can be seen looking about the station before climbing back into the ute, which drove away.
The court was previously told the male accused caught up with the bus as Cassius and the others got off.
Mr Stanwix has said Brealey armed with a metal pole attacked two teens in the group before climbing back into the ute with Palmer and Forth and driving after some of the other teens in the group who had run away across the grassy open space.
Cassius was among them and Brearley struck him on the head at least twice. One blow split his left ear in half and another lacerated his forehead.
Mr Stanwix has said Brearley "was filled with fury about his broken car windows", which happened a day earlier, and about threats communicated via social media that a group of "kids" could damage the home he shared with Gilmore.
The smashed car windows were part of a series of escalating tit-for-tat incidents that started on October 9 when some of the accused allegedly "snatched two kids off the street" and unlawfully detained them, punching, kicking and stabbing one of them.
The incident was triggered by a "love triangle" involving Gilmore's 14-year-old brother and another teen of similar age and social media exchanges about the boys fighting.
A witness, who can not be named for legal reasons, told the jury Gilmore had messaged his younger brother on October 13 "threatening to hit my mother over the head with a metal pole".
"She mentioned she was going to attack (my brother) as well."
It allegedly followed Gilmore and one of her younger brothers messaging the witness's brother to say they were coming to his school for a fight.
But under questioning from Gilmore's lawyer Simon Freitag, the witness agreed Gilmore's actual message said "Oi, do you want your mother dragged out?" with no mention of a pole.
Other CCTV shown to the jury shows the accused drinking and hanging out on the patio at Palmer's house in the hours before Cassius was allegedly attacked.
They climb into a ute about 2.50pm on October 13 and leave, with the court previously told Gilmore's brothers had messaged her about the same time over the threats on social media.
