Sajid Akram and son Naveed are accused of opening fire as Jewish families thronged Bondi Beach for a Hanukkah celebration in December, killing 15 people in Australia’s deadliest mass shooting for 30 years.

Australia’s Jewish community “was the evident target of the attack”, a royal commission tasked with investigating the shooting concluded in an interim report.

Police should consider ramping up security arrangements at Jewish celebrations “that have a public facing element”, said retired judge Virginia Bell, who is leading the inquiry.

Law enforcement agencies should also commence a snap review of “leadership structures” and “information sharing arrangements” between teams responsible for counter-terrorism, Bell said.

The federal royal commission – the highest level of government inquiry – has been tasked with probing everything from intelligence failures to the prevalence of antisemitism in Australia.

Royal commissions hold public hearings and can sometimes run for years.

Alleged gunman Sajid Akram, 50, was shot and killed by police during the assault.

His 24-year-old son Naveed, an Australian-born citizen who remains in prison, has been charged with terrorism and 15 murders.