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Post-mortem examinations to be conducted today are expected to reveal how a Sydney man and his teenage daughter died, in what police believe was a murder-suicide.
The bodies of the 50-year-old man and his 13-year-old daughter were found in the family's home in Stevens Road, Pennant Hills, about 6pm yesterday.
A police spokesman said the post-mortems, being performed later today, would reveal how they died and in what order.
Police believe the deaths were a result of a murder-suicide.
"No third person is wanted in relation to the deaths, but an investigation is under way," the spokesman said last night.
"Someone returning to the home, we are not sure whether a friend or family, made the grisly find," he said.
- AAP