Police believe a man rehearsed a murder-suicide over several days before killing his six-year-old daughter at a waterfront property, according to multiple reports. Authorities say surveillance cameras at the location capture the man throwing the child into the Parramatta River. The footage shows the daughter entering the water, after which the man also jumps into the river himself. All three outlets report that the incident follows a period during which police suspect the man planned and rehearsed what he would do. The reports do not provide details on what evidence led investigators to the conclusion that rehearsal occurred, or how long the man was at the property before the incident. The coverage also does not specify whether police have released the man’s identity, the child’s identity, or further circumstances leading up to the event. Investigators are currently focused on establishing the timeline and motive, and on determining the full context of the man’s actions at the waterfront property.