The suspect’s body was found at another home in Normanhurst, about seven kilometres from the scene of the initial killings, early on Friday morning, NSW Police have confirmed.
It’s believed the man was the father of the children and aged in his 50s.
The 15-year-old boy and a 13-year-old girl were found shot dead in their bedrooms at a house in Hull Road at West Pennant Hills shortly before 5.30pm on Thursday.
— 7 News Sydney (@7NewsSydney) July 5, 2018
Their mother, 36, arrived shortly after police and was treated by paramedics for severe shock.