Peninsular Gas Utilisation (PGU) lines run along the west and east coasts, as well as through the southern tip of the peninsula, supplying natural gas to major cities.

In the days that followed, the area expanded to a radius of almost 200 kilometres. Land over the Malay Peninsula was added to the search, as well as the Strait of Malacca to Malaysia's west.

More than 20 earthquakes have hit central and southeast Asia in the last 24 hours, with one of the most powerful in 75 years in Myanmar.