Fourth person arrested over murders of Perth brothers Callum and Jake Robinson in Mexico

A fourth person has been arrested over the murders of Perth brothers Callum and Jake Robinson, and their American friend, who were killed on a surfing trip in Mexico.

Callum, 32 and Jake, 31 and their mate Jack Carter 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.

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

In the latest development, a fourth person has been arrested in relation to their death. Mexican authorities have not disclosed any details of the latest person who has been arrested or whether they have laid charges.

Ari Gisel Garcia Cota was the first to be arrested over their disappearance, along with her boyfriend Jesus Gerardo Garcia Cota and his brother Cristian Alejandro Garcia.

It is alleged the trio were murdered by Jesus in a bungled robbery while they were camping in the Punta San Hose region in Santo Tomas.

Prosecutors claim that Jesus had driven his girlfriend’s car to the area where the Robinsons and Mr Rhoad were camping sometime between the afternoon of Saturday, April 27, and Sunday morning and ambushed the trio.

Drag marks, bullets and teeth have been found at their campsite, local media reported.

Prosecutors told the court that Jesus returned to the home and told his girlfriend: “I f**ked up three gringos.”

She asked: “What do you mean by that?”.

Jesus declared: “I killed them.”

Mexican authorities claim that the brothers and their friend had been murdered by thieves trying to steal their ute for its tyres.

It is claimed the girlfriend of one of the gunmen was first busted by police during a routine traffic stop when she was found with 100 grams of meth and a mobile phone belonging to the brothers’ American friend Jack Carter Rhoad.

So far only Jesus has been charged in connection with their deaths, and only with forced kidnapping.

Jesus’ charge is expected to be upgraded to murder. He will remain in custody until November, when he is next due to appear in court.

The Attorney-General said investigators were confident more than three people were involved in the attack and had not ruled out the possibility of more people being charged.

Last week, the beloved brothers were farewelled in a heart-wrenching private memorial at Sacred Heart College.

Hundreds gathered at the college in Sorrento — where the brothers attended high school — to remember the fun-loving pair.

Those who could not fit into the college theatre watched the private event on screens in other parts of the school grounds, and scores more were provided with a link to watch from home, interstate, or overseas.

Mrs and Mr Robinson were joined by about 800 people at the school to farewell their boys.