Northern Sumatra has been hit by a magnitude 6.6 earthquake at a depth of 110.1 km. The quake struck just after midnight on 6th September at 00:55 local time. Singkil was the hardest hit city, according to the National Disaster Management Agency in Indonesia. One person has reportedly been killed by rubble falling from a shop. Some hospital buildings on the Simeulue Islands are believed to have collapsed, though no further casualties have been reported.