Philippine election bombshell as tax agency says front runner Ferdinand ‘Bongbong’ Marcos owes US$3.9 billion on his father’s estate

• It’s more than 30 years since his dictator father died, but Marcos Jnr still hasn’t paid a centavo of the huge tax bill on his estate
• Political opponents hope the news will dent the appeal of a politician leading opinion polls ahead of the May 9 election. Marcos, meanwhile, has cried ‘fake news’