Duke of Edinburgh seen at Sandringham

The transcript discusses the possibility of someone having completed an action, indicating uncertainty or speculation about the event.

What do you think the speaker means by 'he might have done it'?

In what context do you think this statement was made?

What implications does the phrase 'might have done it' carry?

How does uncertainty play a role in the statement provided?

What are some possible reasons for the speaker's doubt?