Princess Anne, considered King Charles' secret weapon, is in the hospital after suffering a head injury

• Princess Anne is being treated for a head injury at Southmead Hospital in Bristol, England.
• She sustained a concussion from an incident at Gatcombe Park estate in Gloucestershire.
• The palace said King Charles III had been informed about his sister's condition and recovery.

Princess Anne is receiving treatment in a hospital for a head injury, Buckingham Palace said on Monday.

The king's sister, 73, "sustained minor injuries and concussion following an incident" at her home in Gatcombe Park in Gloucestershire, England, the palace said.