Australian police say homemade pipe and tennis ball bombs were thrown at a crowd at Bondi Beach before a mass shooting but failed to detonate, according to court documents released on Monday.

Fifteen people were killed and dozens injured in the mass shooting at a Jewish Hanukkah celebration at Bondi on December 14.

One of the alleged gunmen, Sajid Akram, 50, who was shot dead by police, owned six firearms.

His 24-year-old son, Naveed Akra,m has been charged with 59 offences, including murder and terrorism, according to police.

The alleged gunmen had planned the attack for several months and visited the Bondi beachside park for reconnaissance two days prior, said a police fact sheet released by the court.

Police believe the items wrapped in the blankets were single-barreled shotguns, a Beretta rifle, three pipe bombs, a tennis ball bomb and a large improvised explosive device.

Police allege the men threw the pipe bombs and tennis ball bomb at the crowd in the Bondi park before they began shooting, but the explosive devices did not detonate, according to the statement tendered to the court.

Police said that they later found 3D printed parts for a shotgun component at the Campsie house, bomb making equipment and copies of the Quran.

The parliament of New South Wales state was recalled on Monday to vote on proposed new laws that would impose major curbs on firearm ownership, ban the display of terror symbols and restrict protests, following the mass shooting.

Prime Minister Anthony Albanese has faced mounting criticism from opponents who argue his government has not done enough to curb a rise in antisemitism.

He was booed by sections of the crowd during a memorial event in Bondi attended by tens of thousands of people on Sunday, one week after the shooting.

Albanese on Monday said he understood that some of the anger in the Jewish community in the aftermath of the attack was directed towards him and pleaded for national unity.

“ As prime minister, I feel the weight of responsibility for an atrocity that happened whilst I am prime minister,r and I am sorry for what the Jewish community and our nation as a whole has experienced,“ he told reporters in Canberra.

Further measures to stop hate speech proposed by Albanese’s government on Monday include a new offence of adults seeking to influence and radicalise children.

Thirteen people remain in the hospital, including four in critical but stable condition, health officials said.

Government on Mondayincludese a new offence of adults seeking to influence and radicalise children.

Authorities on Monday started clearing flowers, candles, letters and other items placed by the public at Bondi Beach.

The tributes would be preserved for display at the Sydney Jewish Museum and the Australian Jewish Historical Society, authorities said.

Thirteen people remain in the hospital, including four in critical but stable condition, health officials said.