"All lines of investigation are open at this time. We cannot rule anything out until we find them."

The story of two Australian surfers and their American friend who went missing on a surf trip to Baja California took a troublesome turn, today, as authorities have said they have found their tents, abandoned on the beach, along with other “evidence.”

Three people have, thus far, been arrested in connection to the disappearance as answers continue to be sought.

Brothers Jake and Callum Robinson, along with Jack Carter Rhoad, traveled south of the border to enjoy a little swell near Ensenada. After they failed to check in to their Rosarito accomodations, alarm bells were sounded.

Initially, a woman was arrested who was said to have one of the brother’s phone and drugs. Later, the burnt out shell of the truck was discovered on a ranch near Ensenada leading to the arrests of two men. One of them was “in a relationship” with the woman.

Andrade Ramírez, the state’s chief prosecutor, shared with local news, “A working team (of investigators) is at the site where they were last seen, where tents and other evidence was found that could be linked to these three people we have under investigation. There is a lot of important information that we can’t make public. We do not know what condition they are in,” she added. “All lines of investigation are open at this time. We cannot rule anything out until we find them.”

The unfolding drama continues to highlight growing cartel unrest in the region. Australia’s Department of Foreign Affairs and Trade has issued a stern warning to any foreign nationals in Mexico.

"When we do send our young men and women overseas to enjoy that adventure holiday, they invite an element of risk."

The parents of Callum and Jake Robinson are pleading with the public, today, for any information on their two sons’ whereabouts after they vanished on a Baja surf trip. The two, who are both in their 30s and from Perth, had traveled to California, driving into Mexico, at the end of April. They were last seen surfing and camping near Ensenada and did not arrive at their planned rental in Rosarito, just north.

Mother, Debra Robinson, took to social media in order to find any details. “They have not contacted us since April 27 … they are travelling with another friend; an American citizen,” she wrote, adding, “Callum is a Type 1 diabetic so there is also a medical concern. We sincerely appreciate everyone’s concern and thoughts at this time. We continue to have hope that our two beautiful boys are found.”

It has been reported that a woman, 25, was found with one of the missing men’s cellphones and also carrying drugs. She was subsequently arrested and turned over to the state prosecutor.

The Western Australia premier Roger Cook said he was monitoring the situation and very distressed. “This must be very worrying for the families involved,” he shared. “When we do send our young men and women overseas to enjoy that adventure holiday, they invite an element of risk. I understand one of the individuals has a medical condition that would need ongoing care. I share [the] concerns of all Western Australians in terms of their welfare.”

Mexico, of course, has its share of security concerns with the ongoing cartel wars. Baja California Sur and Baja California are, unfortunately, among the states with the highest homicide rates.