Tremors were felt along India’s entire eastern coast after a powerful 8.6 magnitude earthquake and a series of strong aftershocks struck off the northern tip of Indonesia’s Sumatra Wednesday afternoon, triggering fears of a devastating 2004-type tsunami across the Indian Ocean region.

Indonesia said it was checking for damage and casualties, but remarkably no such reports were received for several hours, including in Aceh, the closest province and the area decimated by the disaster eight years ago.