The parents of a Gorton-born man shot dead by police in Australia allege officers waited for around seven minutes before they gave him CPR at the scene.
They also allege Luke Gilbert didn't lunge at them with a penknife he was carrying on a belt clip - or threaten them in any way at all.
Darren and Nicola Gilbert have now launched a petition which has attracted more than 15,000 signatures and called for a 'transparent and independent investigation into Luke's death, including a review of the officers' use of force and whether they followed proper procedures'.
They allege police used excessive force - and 'carelessly went straight for the guns'. Luke, who was 24, and his younger brother, Zac, together with their parents, moved to Perth in Western Australia from Abbey Hey in Gorton, Manchester, when Luke was five.
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