A Facebook social media account named "Blerta Pupi Mile" published a post yesterday (March 18) claiming that the British royal family "Buckingham Palace" has announced the death of King Charles III.
This false claim about the death of King Charles III was also published on the X platform (formerly Twitter) by a Russian-language account “GazetaRu.” (here)
After research conducted through online search engines, hibrid.info has proven that the claim about the death of King Charles III is false.
Fact-checking platform from Spain "Newtral.es"has received a response from "Buckingham Palace", which states that "His Majesty continues with his official and private affairs."
Link to the post published on Facebook by the Albanian-language account "Blerta Pupi Mile":

Regarding the alleged statement issued by the British Royal Family informing of the death of Charles III on March 18, Buckingham Palace has said: Newtral.es that "his majesty continues with his official and private affairs", so it is not true that he is dead. (here)
The British Embassy in Russia used the social media account X (formerly Twitter) to respond to this claim, saying “Reports of the death of King Charles III of Great Britain are false!” (see here)
Also, on the official website of the British royal family, "Royal.uk", there is no statement issued that proves that the published document about the death of Charles III is official. (here)
Analyze:
After research conducted by hibrid.info, it has been proven that the claim about the death of King Charles III is false.
Also, the document that appears to be officially issued by Buckingham Palace has not been found published on the official website of the British royal family.
The Spanish fact-checking platform "Neëtral.es" has received a response from "Buckingham Palace", which states ""His Majesty continues with his official and private affairs."
So, even the post made in Albanian by a Facebook account claiming the death of King Charles III is considered "Fake News".
Reasoning:
The “Fake News” rating is given to informational content that is entirely fabricated or that contains factually incorrect claims or information. Content that is rated as fake news can be defined as having been created and distributed with the intent to misinform the public, i.e., to present a claim that is completely false as fact.