The BBC said Sunday that it has suspended a leading presenter who is alleged to have paid a teenager for sexually explicit photos. As senior British politicians urged a rapid investigation, the broadcaster said it was working to establish the facts of “a complex and fast-moving set of circumstances”. The UK's publicly funded national broadcaster was scrambling to head off a worsening crisis after The Sun newspaper reported allegations that the male presenter gave a youth 35,000 pounds ($45,000) starting in 2020 when the young person was 17.