The gunmen who allegedly carried out a deadly attack on a Jewish festival at Bondi Beach last week threw four undetonated explosives at the start of the attack, including a 'tennis ball bomb', according to newly released documents.
Naveed Akram, 24, has been charged with dozens of offences including 15 counts of murder over the attack at a Hanukkah celebration on 14 December. Akram, who was shot by police during the attack, was released from hospital on Monday and transferred to a prison.
The second alleged gunman, his father Sajid Akram, was shot dead.
The pair recorded a video manifesto in October in which they sit in front of the Islamic State group flag, according to police documents.
The Akrams 'meticulously planned this terrorist attack for many months', police alleged. Videos found on Naveed's phone showed the pair were motivated by 'violent extremist ideology' linked to the Islamic State group.
Included was evidence of their firearms training and their rehearsed motivations, documented in a video where they condemned 'the acts of Zionists'. CCTV footage also captured their preparatory activities in the days preceding the attack.
Items recovered after the attack included three firearms and homemade improvised explosive devices. The police maintain that the explosives thrown during the attack, including the tennis ball bomb, were assessed as viable, even though they did not detonate.
Naveed Akram, critically injured during the attack, missed the latest court appearance due to his condition.
