A now-deleted photo of seashells posted on Instagram by the former FBI director James Comey is being investigated by the US Secret Service, after the US homeland security secretary, Kristi Noem, said it constituted a “threat” against Donald Trump, and set off warnings from other administration officials.
On Thursday, Comey posted a photo of seashells forming the message “8647”, with a caption that read: “Cool shell formation on my beach walk.”