Australian authorities are investigating an incident involving gunfire originating from a bridge in Sydney. Authorities issued a police message advising residents to take shelter and remain in secure locations until the situation is contained. The Prime Minister, Anthony Albanese, has committed to reviewing and enhancing gun control legislation following the event to prevent similar occurrences in the future. Details about the number of shots fired, the exact location, and potential suspects are still under investigation, and authorities continue to collect evidence and assess the threat level. The incident has prompted increased security measures along key infrastructure and prompted public advisories to ensure safety. No injuries are confirmed at this time, and efforts are underway to identify and apprehend any involved individuals.