Police investigating the deaths of a man and two children whose bodies were found outside a car on a bridleway in Newton Stacey, Andover, on Sunday.
Officers were alerted at around 6.15pm after a member of the public discovered the bodies.
The bodies have not been formally identified but they are believed to be Michael Pedersen, aged 51 of Chertsey, Surrey, Ben Pedersen, aged 7, and Freya Pedersen aged 6, both of Ashford, Middlesex.
The Coroner has been informed and post mortem examinations are due to take place.
Det Sup Tony Harris, said: “We are currently investigating the circumstances surrounding this terrible incident and are working to establish what has led to these tragic deaths.
“We are treating this as an isolated incident and we do not believe anyone else was involved."