Indonesia's Aceh province is on a tsunami alert after an 8.7 magnitude earthquake struck off the coast.
The quake was recorded at a depth of 33km, 431km off the coast of Sumatra, the nation's geophysical agency reported.
The earthquake was recorded at 2:38pm local time (6.38pm AEST).
Aceh bore the brunt of the 2004 Boxing Day tsunami, which killed more than 230,000 people in 14 countries.
More to come.