Fourth person arrested over the alleged murders of Perth brothers in Mexico

A fresh update has been revealed after a pair of Australian brothers were killed while on the surf trip of a lifetime in Mexico.

A fourth person has been arrested over the alleged murders of Perth brothers Callum and Jake Robinson, who were killed while on a surf trip in Mexico.

Brothers Jake, 30, and Callum Robinson, 33, and their friend Jack Rhoad, 30, had been on a surfing and camping trip in the Baja California region of Mexico, near Ensenada when they vanished on April 27.

Family and friends took to social media to ask for help to find them after they failed to check into their Airbnb in Rosarito, near the US-Mexico border.

Callum and Jake Robinson were last seen near the Rosarito and Ensenada region of Baja California, before their bodies were found down a well. Source: Facebook

A fourth person has now been arrested in connection to the alleged murders, after the brother’s bodies were discovered 10 metres down a well, Nine reports.

The authorities have not disclosed any details of the man arrested.

The trio’s bodies were found weeks after their disappearance near their remote campsite, with three Mexicans arrested soon after.

Police were able to make the initial three arrests after one of the brothers’ mobile phones was turned back on and pinged a local tower.

A woman was found in possession of the phone as well as some illicit drugs.

A burnt out car which was believed to have belonged to the trio was found by local police. Picture: Supplied

She was arrested along with two other men.

The incident is believed to be a “robbery gone wrong”, with Mexican authorities alleging the three men were shot in the head by locals attempting to steal the tyres from their pick-up truck.

Jesus Gerardo, the accused ringleader of the trio also known as “El Kekas”, faced court and is set to remain behind bars until his hearing in November later this year.

Mr Gerardo was arrested along with his brother Cristian Alejandro and girlfriend Ari Gisel.

The Brothers were commemorated by their friends and family in a paddle out at Sorrento Beach, north of Perth this month, six weeks after they were killed.

The Robinson brothers with their parents. Picture: Instagram

Parents Debra and Martin Robinson paid tribute to their sons as they delivered an emotional speech to the 800 grieving friends and family watching the service, which was also live streamed.

Hundreds attended the paddle out, heading out into the ocean on surf boards or boats and formed a circle with their oars in the air.

The Sorrento Surf Lifesaving Club posted on their Facebook page about the ceremony.

“It will provide these communities with an opportunity to come together to commemorate and remember these two wonderful boys and show their support for their family,” the post read.

A large group of Friends and family members have paddled out off a beach in WA in memory of Jake and Callum Robinson, who were killed during a surfing trip in Mexico. Picture: Supplied

“WA surfers, surf life savers and ocean paddlers will all come together as one group as they paddle out to form a circle and remember Callum and Jake.”

Callum and Jake’s mother, Debra Robinson paid tribute to her sons, along with her husband Martin during their service.

“We loved that Jake was curious, kind and happy and never judgmental,” she said.

“Callum always made a conscious decision to wake up and be positive every day. He saw so much fun in life. We miss you beyond description, Callum and Jakey boy, please shine on us.”