Prince Harry and Meghan Markle

Police in Great Britain are investigating a package reportedly addressed to Prince Harry and Meghan Markle as a “racist hate crime.”

The powder inside sparked an anthrax scare, but it was found to be harmless after being examined by experts. UK media reports have said the package also contained a racist letter. Markle is from a mixed-race background and is due to marry Prince Harry in May. The letter was received this month at St James’s Palace in central London.

“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. “The matter is being investigated by officers from the Met’s counter-terrorism command.”