Via americankabuki.

Man flies by airplane and Manchester Airport
Excerpt:
The official report in to the incident on Friday June 13 admitted it was ‘unfortunate’ and ‘frustrating’ there was ‘no way of corroborating what they had reported’.
It added that the flight crew ‘couldn’t be certain that it wasn’t a person-shaped balloon.’
Aviation expert Chris Yates said: ‘It is a complete and utter mystery.’