Brexit campaigner Arron Banks is being investigated by the elections watchdog over whether he breached campaign finance rules on donations in last year's EU referendum.
The Electoral Commission said it will probe whether the former UKIP donor and Leave. EU chairman may have committed offences over donations or loans made to campaigners in the referendum.
Responding, Mr Banks tweeted, "Gosh I'm terrified."
Investigations are now looking into whether the South Gloucestershire millionaire businessman breached campaign finance rules.