A 6.5-magnitude earthquake which struck Sumatra in Indonesia early today was felt in Penang, the Malaysian Meteorological Department said.

The department said in a statement that the quake, which occurred on the west coast of northern Sumatra, 70km northwest of Simeulue, at 1.31am, was felt in southwest Bayan Lepas, 589km from the epicentre.

The quake did not pose any threat of a tsunami in Malaysia, it added.