Police are investigating the deaths of a man and his six-year-old daughter in Sydney, Australia, as a suspected murder-suicide. Authorities believe the man intentionally threw his daughter into the Parramatta River before entering the water himself. Security footage from a nearby waterfront property captured the incident, which occurred after a period of premeditation, according to investigators. Emergency services responded to the scene but were unable to revive either individual. The man had reportedly been rehearsing the act over several days. Police are continuing to gather evidence and determine a definitive motive, but the case is being treated as a tragic act of intentional violence. The incident has deeply shocked the local community.