MELBOURNE, Australia — In a tragic incident that has left the nation in shock, 15 people lost their lives during a Hanukkah celebration at Sydney’s Bondi Beach in what authorities have identified as a “terrorist attack inspired by Islamic State,” according to Australia’s federal police commissioner, Krissy Barrett.

The attack involved a father and son duo, aged 50 and 24. Officials have named the father as Sajid Akram, who was killed during the incident, while his son is currently receiving medical treatment at a local hospital.

During a press conference on Tuesday, political leaders and law enforcement officials revealed their conclusions regarding the suspects’ motivations for the first time. Prime Minister Anthony Albanese mentioned that their assessment is based on evidence, notably the discovery of Islamic State flags in a vehicle connected to the incident.

As the community grapples with the aftermath, 25 individuals remain hospitalized following the Sunday’s attack, with 10 in critical condition. Among those receiving care are three children being treated at a pediatric hospital.

Among the survivors is Ahmed al Ahmed, who bravely intervened during the attack, disarming one of the assailants and safely setting aside the weapon.

The deceased victims, ranging from 10 to 87 years old, had gathered for a Hanukkah celebration at the iconic Australian beach when the tragic events unfolded.

Calls for stricter gun laws

Albanese and the leaders of some of Australia’s states have pledged to tighten the country’s already strict gun laws in what would be the most sweeping reforms since a shooter killed 35 people in Port Arthur, Tasmania, in 1996. Mass shootings in Australia have since been rare.

Officials divulged more information as public questions and anger grew on the third day following the attack about how the suspects were able to plan and enact it and whether Australian Jews had been sufficiently protected from rising antisemitism.

Albanese announced plans to further restrict access to guns, in part because it emerged the older suspect had amassed his cache of six weapons legally.

“The suspected murderers, callous in how they allegedly coordinated their attack, appeared to have no regard for the age or ableness of their victims,” said Barrett. “It appears the alleged killers were interested only in a quest for a death tally.”

Authorities probe suspects’ trip to Philippines

The suspects traveled to the Philippines last month, said Mal Lanyon, the Police Commissioner for New South Wales state. Their reasons for the trip and where in the Philippines they went would be probed by investigators, Lanyon said.

He also confirmed that a vehicle removed from the scene, registered to the younger suspect, contained improvised explosive devices.

“I also confirm that it contained two homemade ISIS flags,” Lanyon said.

The Philippines Bureau of Immigration confirmed Tuesday that Sajid Akram traveled to the country from Nov. 1 to Nov. 28 along with Naveed Akram, 24, giving the city of Davao as their final destination. Australian authorities have not named the younger suspect.

Groups of Muslim separatist militants, including Abu Sayyaf in the southern Philippines, once expressed support for the Islamic State group and have hosted small numbers of foreign militant combatants from Asia, the Middle East and Europe in the past.

Decades of military offensives, however, have considerably weakened Abu Sayyaf and other such armed groups, and Philippine military and police officials say there has been no recent indication of any foreign militants in the country’s south.

Albanese visits man who tackled shooter

Earlier, Albanese visited al Ahmed in a hospital. Albanese said the 42-year-old Syrian-born fruit shop owner had further surgery scheduled on Wednesday for shotgun wounds to his left shoulder and upper body.

“It was a great honor to met Ahmed al Ahmed. He is a true Australian hero,” Albanese told reporters after a 30-minute meeting with him and his parents.

“We are a brave country. Ahmed al Ahmed represents the best of our country. We will not allow this country to be divided. That is what the terrorists seek. We will unite. We will embrace each other, and we’ll get through this,” Albanese added.

Lifeguards praised for actions during massacre

The famous blue-shirted lifeguards of Bondi Beach attracted praise as more stories of their actions during the shooting emerged.

One duty lifeguard, identified by the organization’s Instagram account as Rory Davey, performed an ocean rescue during the shooting after people fled, fully clothed, into the sea.

Another lifeguard, Jackson Doolan, posted to his social media a photo taken as he sprinted, barefoot and clutching a first aid kit, from Tamarama beach a mile away toward Bondi as the massacre continued.

“These guys are community members and it’s not about the surf,” Anthony Caroll, one of the stars of a popular reality television show called “Bondi Rescue,” told Sky News on Tuesday. “They heard the gunshots and they left the beach and came right up the back here into the scene of the crime, into harm’s way while those bullets were being shot.”

Record numbers sign up to donate blood as Australians mourn at scene of shooting

Israeli Ambassador to Australia Amir Maimon visited the scene of the carnage on Tuesday and was welcomed by Jewish leaders.

“I’m not sure that my vocabulary is rich enough to express how I feel. My heart is torn apart because the Jewish community, the Australians of Jewish faith, the Jewish community is also my community,” Maimon said.

Thousands have visited Bondi from all walks of life since the tragedy to pay their respects and lay flowers on a mounting pile at an impromptu memorial site.

One of the visitors on Tuesday was former Prime Minister John Howard, who was responsible the the 1996 overhaul of gun laws and an associated buyback of newly outlawed weapons.

In the aftermath of Sunday’s shooting, a record number of Australians signed up to donate blood. On Monday alone close to 50,000 appointments were booked, more than double the previous record, the national donation organization Lifeblood told The Associated Press.

Almost 1,300 people signed up to donate for the first time. Such was the enthusiasm at Lifeblood’s Bondi location that appointments to give blood were unavailable before Dec. 31, according to the organization’s website.

A total of 7,810 donations of blood, plasma and platelets were made across the country on Monday, spokesperson Cath Stone said. Australian news outlets reported queues of up to four hours at some Sydney donation sites.