Counter-terrorism officers are currently investigating a racist letter containing white powder that was allegedly intended for Prince Harry and Meghan Markle.

According to The Guardian, the letter was received at St. James's Palace in central London this month. The package contained a racist note addressed to Harry and the "Suits" alum. A member of the staff opened and intercepted the letter before it reached the soon-to-be-married pair. Specialist officers were then called in to investigate the matter.

"Officers are also investigating an allegation of malicious communications, which relates to the same package, and it is being treated as a racist hate crime," Scotland Yard said in a statement, adding, "The matter is being investigated by officers from the Met's counter-terrorism command."

Markle, an actress from a mixed-race background, is set to marry Harry on May 29. Authorities have completed tests and it was confirmed that the powder was harmless. The former TV star and her royal beau have been informed about what happened.

Although the suspicious letter was found to be safe, reports note the incident will likely leave members of the Royal Household more concerned about security as the couple's spring wedding approaches. It has been previously reported that Markle already has her own police protection ahead of marrying into the family as an added security measure.

Police confirmed to Fox News that no arrests have been made regarding the anthrax threat so far, noting "inquiries continue" at this time. St. James' Palace used to be the official royal residence until it was replaced by Buckingham Palace as the royal family's home.

Aside from serving as a meeting place, St. James' Palace is now being used as a London residence for lesser-known members of the royal clan, including Princess Beatrice of York and Princess Eugenie of York.