The Queen of England is under medical supervision at Balmoral Castle after doctors became concerned for her health, Buckingham Palace has said. All the Queen’s children are gathering at, or are travelling to, her Scottish estate near Aberdeen. No further details were given about the health of the 96-years-old monarch.

“Following further evaluation this morning, the Queen’s doctors are concerned for Her Majesty’s health and have recommended she remain under medical supervision,” a statement said.

The Queen is “comfortable”, it added.

It is very unusual for Buckingham Palace to put out a statement like this – it is usually unwilling to provide a commentary on the 96-year-old monarch’s medical matters, which are seen as private.

Prince Charles has travelled to Balmoral with his wife, the Duchess of Cornwall.

The Duke of York and the Count and Countess of Wessex are travelling to the Scottish estate, about 40 miles (64km) west of Aberdeen.