Officials are investigating similar attacks across Europe, all claimed by a shadowy Islamist group that may be using low-cost, unsophisticated methods to sow fear in Jewish communities.
The British royals are set to arrive on Monday for a visit hosted by President Trump, with a garden party, an address to Congress and a banquet on the schedule.
Sarah Mullally was installed on Wednesday at Canterbury Cathedral. Her appointment to the role has been both celebrated and denounced by some factions within the global Anglican Church.