Earlier today, Queen Elizabeth II’s family rushed to Scotland to be by her side when they heard the news that her health was declining. Then, hours later, the sad news arrived. After 70 years on the throne, the longest reigning monarch in British history has died at the age of 96.

Buckingham Palace announced the news via Twitter sharing that she “died peacefully at Balmoral” and that her oldest son, Prince Charles, who is now officially King, and his wife, Camilla, will be staying in Balmoral, where the Queen died and returning home to London tomorrow.

The announcements don’t stop there. Shortly after the tweet about the Queen’s passing, the first message came from His Majesty the King, formerly known as Prince Charles. The late Queen’s oldest son shared, “The death of my beloved Mother, Her Majesty the Queen, is a moment of the greatest sadness for me and all members of my family. We mourn profoundly the passing of a cherished Sovereign and much loved Mother.”

While we already knew that Charles was next in line to the throne and would be promoted from Prince to King, we now know his new official title. The New York Times reports that he is now King Charles III.

King Charles III is 73 years old and the oldest person to ever inherit the British throne.

While Charles is already automatically King, he will be formally proclaimed King tomorrow, and he will make a speech to the nation. The following day, the Queen’s coffin will arrive in London, and the Queen will lie in state at Westminster Hall for three days. Ten days after her death, her funeral will be held at Westminster Abbey.