In a letter to the Home Affairs Select Committee, Theresa May said the £1,716,306 figure includes the terror suspect's legal aid costs of £647,658, as well as more than £1 million in Home Office costs for pursuing the case through the courts.
More top news
Four people are presumed dead after heavy rainstorms triggered flooding in south-west Germany.
A man has been arrested over an offensive Hillsborough shirt
Early low cloud will gradually retreat to North Sea coasts to leave many with a fine day, particularly in the west.