From article said:The child appears to have got hold of a .45 calibre pistol which was lying on the back seat and fired it accidentally.
What makes them think it was accidental, when the same article quotes the mother:
Just 24 hours before the incident, she posted a message on social media boasting: ''Even my 4 year old gets jacked up to target shoot with the .22".
It sounds very much like this 4 year old knew how to pull a trigger.
Ms Gilt is a passionate horse rider and she was on her way to pick up a new pony when the shooting occurred
Maybe her son decided they already had too many ponies, eh?