London: Queen Elizabeth II, Britain's longest-reigning monarch, died at Balmoral Castle in Scotland on Thursday. She was 96 years old. The Queen ruled for 70 years. With his death, the longest reign of any ruler in the history of Britain came to an end. His family began gathering at his Scottish estate in Aberdeenshire on Thursday morning after concerns about his health grew.

Charles, the former Prince of Wales, will now be the new monarch of Britain. Britain's newly appointed Prime Minister Liz Truss said on the news of the death of Queen Elizabeth II , 'We are all in deep pain. This is a big blow to the country and the world. He described the Queen as "a rock upon which modern Britain was built." He said, 'Britain is a great country today because of them.' He said the Queen was a personal inspiration to him as well as many Britons.

"His devotion to duty is an example to all of us," Truss said in a statement outside 10 Downing Street. Buckingham Palace said in a statement, 'The Queen passed away this afternoon at Balmoral.' "The King and the Queen Consort (Charles and Camilla) will be at Balmoral this evening and return to London tomorrow (Friday)," the statement said.

In a statement issued by the royal family, the new monarch Charles said: "The passing of My Dear Mother, Her Majesty the Queen, is a moment of deep sorrow for me and all members of my family." I know that the grief of his passing will be deeply felt by countless people across the country and the Commonwealth and around the world. Charles (73) said, 'We are deeply saddened by the passing of the Queen and beloved mother.'

The Queen ascended the throne in 1952 and she witnessed unprecedented social change. Following his death, his eldest son and successor, Charles, will lead his funeral and tribute program as head of the 14 Commonwealth Territories. Charles and members of the Queen's close family arrived at Balmoral, near Aberdeen, after doctors placed the Queen under medical supervision. Her grandson, Prince William, is on her way with her brother, Prince Harry.

The Queen's daughter Princess Anne was already with him in the Scottish palace and their other children - Prince Andrew and Prince Edward - joined them later. Prince Harry and Meghan (Duke and Duchess of Sussex), who were in London for a charity event, also arrived at the Queen's summer residence. William's wife Kate (Duchess of Cambridge) is in Windsor as their children - Prince George, Princess Charlotte and Prince Louis - have their first day at a new school there. The 96-year-old monarch is suffering from age-related problems and cut short her travels to Scotland earlier this week, including the appointment of new prime minister Liz Truss.