Security alert in London as Meghan and Harry are sent a suspicious package

Prince Harry and Meghan Markle have found themselves at the centre of a major security alert in London.

The couple - who are due to marry at the end of May in Windsor - were recently sent a suspicious letter which was later found to contain white powder. The letter was sent directly to their Kensington Palace home. https://twitter.com/theroyaleditor/status/966634292867715072 The substance, sent to the Palace on February 12, was believed to be anthrax. However, expert chemical later analysis revealed that it was harmless. DailyMail.com reports that:

"The letter - which was addressed to both Harry and Meghan - prompted a terror alert after it was received at the Palace where the Duke and Duchess of Cambridge and their children also live.

"The package was intercepted by staff and it did not reach Harry or Meghan - but they have both been informed of the incident."

So far, Clarence House has not commented on the incident. Counter-terror police are investigating, London's Evening Standard confirms. Harry proposed to Meghan after just a year of dating. They will wed at St George’s Chapel in Windsor Castle on Saturday May 26. It's the same place where Harry’s father, Prince Charles, married his stepmum, Camilla Parker Bowles, back in 2005. Harry's cousin, Eugenie, will furthermore marry her long-term boyfriend there this October.