BBC presenter allegations: What are the new claims and the unanswered questions?

A male BBC presenter suspended following claims he paid a teenager for sexually explicit pictures continues to come under scrutiny as more allegations are made against them. (James Manning/PA)
A male BBC presenter suspended following claims he paid a teenager for sexually explicit pictures continues to come under scrutiny as more allegations are made.
Here the PA news agency looks at what we know and the unanswered questions surrounding the furore.