Australia is in mourning for the 15 people killed at the shooting during a Hanukkah celebration at Bondi beach on December 15, while the investigation into the shooting is making progress. A father and son are behind the shooting - one gunmen was killed at the scene while the other is in police custody. Authorities have tracked the gunmen's movements leading up to the attack, including a trip to Mindanao island in the Philippines, which has a history of islamist insurgency.
