Emotional moment parents of Aussie brothers Callum and Jake Robinson break down after flying to Mexico to identify their bodies

The parents of Perth brothers Callum and Jake Robinson, who were were killed during a surfing trip in Mexico, have spoken emotionally after flying over to the country and identifying their remains.

Martin and Debra Robinson broke down in tears as they spoke from San Diego, California, on Tuesday (local time).

Callum, 33, and Jake, 30, and their American friend Jack Carter Rhoad, 30, were killed in what authorities suspect was a robbery that escalated when the surfing trio resisted attempts to take their ute.

They had been camping at San Miguel beach in the Mexican state of Baja California when they were reported missing on April 27.

Their bodies were eventually found in a 50-foot well on a cliffside property nearby, along with that of another local ranch owner.

Martin and Debra Robinson broke down in tears as spoke from San Diego, California, on Tuesday (local time), where they shared their heartbreak over their son's deaths

'It is with heavy hearts that we share the news that Callum and Jake have been murdered,' Ms Robinson said 

'It is with heavy hearts that we share the news that Callum and Jake have been murdered,' Ms Robinson said.

'Our hearts are broken and the world has become a darker place for us.

'We also mourn the loss of Carter Rhoad, a close friend.

'They were young men enjoying their passion of surfing together.

'Now it's time to bring ... them home to family and friends - and the ocean waves in Australia. Please live bigger, shine brighter and love harder in their memory.'

She said thanked those who had offered their condolences and said they had been 'overwhelmed with the outpouring of emotions and support'.

'We have always been very proud of their academic and sporting achievements and admired their life choices as,' she said.

Martin and Debra Robinson (pictured) break down as they speak about their heartbreak

Mexico police allege the Perth surfers and Mr Rhoad were shot in the head by locals attempting to steal the tyres from their pick-up truck 

She spoke of Callum's 'larger than life character' and his sporting achievement, playing professional lacrosse in America.

She described Jake as a 'happy, gentle and compassionate soul' who was pursuing a career in medicine and about to take up a new job in Geelong - close to some of Victoria's best surf beaches.

'Jake's passion was surfing and it was no coincidence that many of his hospitals that he worked in were close to surfing beaches.'

Their comments come after the pair visited the morgue in Ensenada, Mexico, to identify their sons' bodies on Sunday (local time).

Mexico police allege the Perth surfers and Mr Rhoad were shot in the head by locals attempting to steal the tyres from their Chevrolet pick-up truck.

Mexican authorities have arrested three people - Jesús Gerardo Garcia Cota, Ari Gisel García Cota and Cristian Alejandro García - who were all allegedly found in possession of drugs.

The charges they will face were yet to be announced while authorities awaited formal confirmation of the bodies. 

Brothers Jesus Gerardo Garcia Cota and Cristian Alejandro Garci­awere two of the three arrested in the suspicious deaths of two Australian brothers, Callum and Jake Robinson and American Jack Carter Rhoad

Their bodies were found in a well on a cliff nearby on Saturday after a desperate search was launched when their parents hadn't heard from them