Before the coronation, the UK royal residence will be attacked.

A man who allegedly threw several objects through the gates of Buckingham Palace was detained on Tuesday evening, Scotland Yard has said. The incident comes just days before the coronation of King Charles III. The individual, who has not been identified, approached the gates of the royal residence around 7pm local time and threw what police say may have been “shotgun shells” onto palace grounds. The Metropolitan Police is treating the event as an isolated mental health incident and not terrorism-related. A security cordon was established around the palace while officers carried out a “controlled demolition” of the suspect’s “suspicious” bag. Most of the roads around the royal residence were reopened within a couple hours. British security services are on high alert ahead of Saturday’s coronation ceremony, expected to feature centuries-old traditions, including a loyalty oath.