A powerful earthquake in Indonesia's Aceh province flattened buildings and sparked landslides on Tuesday, killing at least five people and injuring dozens in a region devastated by the quake-triggered tsunami of 2004. The 6.1-magnitude quake struck inland at a depth of just 10 kilometres (6.2 miles) in the mountainous Bener Meriah district in the heart of Aceh, the US Geological Survey said