After news broke Thursday (Sept. 8) that Queen Elizabeth II passed away at the age of 96, many questions remain about what comes next, including who is next in line for the throne and when the late queen’s funeral will be held.

Below, here’s everything we know about what happens next following the queen’s death.

What Is Operation London Bridge?

According to The Guardian, Operation London Bridge is the code phrase for Queen Elizabeth II’s death, used to alert key officials about the queen’s passing prior to the public.

Reportedly, once Operation London Bridge was enacted, the queen’s private secretary, Sir Edward Young, contacted the prime minister and gave the code phrase, signaling the queen’s death.

From there, the code was likely sent to “the 15 governments outside the UK where the Queen is also the head of state, and the 36 other nations of the Commonwealth for whom she has served as a symbolic figurehead.”

There have been other code phrases used over the course of history, however, Operation London Bridge is specific to Queen Elizabeth II. The previous code phrase for a royal death was Hyde Park Corner, which was used for Queen Elizabeth II’s father King George VI, who died in 1952.

When and Where Will Queen Elizabeth II’s Funeral Take Place?

Queen Elizabeth II’s death will be followed by a period of 10 days of national mourning.

Her casket will reportedly be taken to Waverley Station and transported on the Royal Train to London.