Aaron Cockman whose children were shot dead by their grandfather Peter Miles has spoken out

The father of four children believed to have been shot dead by their grandfather in a mass murder-suicide has spoken out about his heartbreak in order to advocate for a better system for separated families. 

Aaron Cockman will join children’s advocates For Kids Sake and other groups lobbying for a fresh approach to family separation in Canberra on Tuesday. 

‘This is all about the kids,’ he told the Sunday Times.

Three months ago, Mr Cockman’s estranged father-in-law Peter Miles, 61, (pictured) allegedly shot dead his family at their farm near Margaret River in Western Australia

‘Go straight to mediation. Get it all sorted in the same room. Force both parties to be there in mediation and get it sorted.’ 

It comes just three months after the tragedy, which saw Mr Cockman’s estranged father-in-law Peter Miles, 61, allegedly shoot dead his family at their farm near Margaret River in Western Australia. 

Included in the victims were Mr Cockman’s wife Katrina, 35, and their four children – daughter Taye, 13, and sons Rylan, 12, Arye, 10, and Kadyn, eight. 

Miles also killed his own wife Cynda, 58, before turning the gun on himself. 

Included in the victims were Mr Cockman’s wife Katrina, 35, and their four children – daughter Taye, 13, and sons Rylan, 12, Arye, 10, and Kadyn, eight (pictured) 

At the time of the mass murder, Mr Cockman had been involved in an ongoing dispute with his in-laws about seeing the children. 

‘It’s like a constant sadness. My heart drops every time I think about the kids,’ Mr Cockman said.

He has several meetings lined up, but is aiming to sit down with Attorney-General Christian Porter, Prime Minister Malcolm Turnbull and Opposition Leader Bill Shorten. 

Mr Cockman has now set up several meetings lined up, but would also like to sit down with Attorney-General Christian Porter, Prime Minister Malcolm Turnbull and Opposition Leader Bill Shorten following the tragedy