Ex-FBI director deletes Instagram post of shells in ‘8647’ formation that Republicans claim is code for assassination

A photo of seashells posted on Instagram by the former FBI director James Comey is now being investigated by the US Secret Service, after the US homeland security secretary Kristi Noem said it constituted a “threat” against Donald Trump.

On Thursday, Comey posted a photo of seashells forming the message “8647”, with a caption that read: “Cool shell formation on my beach walk.”

Trump’s supporters have interpreted the message as an endorsement of violence against Trump – the 47th president. There is more debate around the use of 86, a slang term often used in restaurants to mean getting rid of or throwing something out, and which, according to Merriam-Webster, has been used more recently, albeit sparingly, to mean “to kill”.