A 7.2-MAGNITUDE earthquake has struck the western coast of northern Sumatra.
The undersea earthquake hit the Indonesian province at 5.37am (EDT). Its centre was located about 29 kilometres under the surface.
The Indonesian government has issued a tsunami warning but the Joint Australian Tsunami Warning Centre has confirmed Australia is not at risk.
''There is no tsunami threat to the Australian mainland, islands or territories,'' it said.
This morning's quake comes more than seven years after a 9.15 magnitude earthquake off Indonesia's Aceh province on Sumatra triggered the 2004 Boxing Day tsunami that killed more than 200,000 people in Indonesia, Sri Lanka, India, Thailand and on the east coast of Africa.