Most submarine cable faults occur as a result of human activities such as fishing and anchoring in shallow waters near shore, natural hazards such as earthquakes and landslides, and then equipment failure.

MainOne stated that given the distance from land and the cable depth of about 3 km at the point of fault, any kind of human activity—ship anchors, fishing, and drilling, among others—had been immediately ruled out.

“Our preliminary analysis would suggest some form of seismic activity on the seabed resulted in a break to the cable, but we will obtain more data when the cable is retrieved during the repair exercise,” the operator said.

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