Mystery surrounds what exactly was object US jet shot down over Alaska

High-altitude object the size of a small car was downed on Friday but its owner and purpose have yet to be identified

Questions remain a day after the US government said it shot down a high-altitude object the size of a small car along the north-eastern Alaskan coast on Friday afternoon.

Though efforts by the navy, coast guard and FBI are under way to recover the object, officials had yet to identify its owner or purpose on Saturday.