The head of UK Counter Terrorism Policing said they consider Iranian state involvement "highly likely".
No formal investigation has started, but the regulator is making inquiries into the case.
The government is expected to accept all 27 recommendations made in the review by ex-Ofsted boss, Sir David Bell.
The long-awaited decision about the controversial North Sea field is expected on Wednesday morning.
The closures are announced as the corporation continues to try to save £500m over two years.
The entertainer denies three counts of rape, three charges of sexual assault and one of indecent assault.