HO CHI MINH CITY, June 16 (Xinhua) -- The Asia America Gateway (AAG) undersea cable suffered from a breakdown, cutting off all international connections through the AAG-SH1 branch of the line, an internet service provider in Vietnam said on Saturday.

The cause of the breakdown has not been clarified, but it is believed to be a power leakage or cable breakage, Vietnam News Agency reported.

This is the third breakdown of the cable line so far this year with the previous two ruptures in January and May.

Becoming operational in 2009, the AAG has a total length of 20,000 km, connecting Southeast Asia with the United States. The route's connecting point with Vietnam is part of the S1 section, extending 314 km and coming on land in southern Ba Ria Vung Tau province.