A 5.0 magnitude earthquake rocked Indonesia's western Aceh province early Thursday, the US Geological Survey said, but there were no immediate reports of damage or casualties. The shallow quake struck shortly before 1 am local time with its epicentre 20 kilometres northwest of the city of Langsa.

No tsunami warning has been issued. Indonesia, one of the most disaster-prone nations on earth, straddles the so-called Pacific "Ring of Fire", where tectonic plates collide and many of the world's volcanic eruptions and earthquakes occur.