Prince Phillip has been admitted to Aberdeen Royal Infirmary, BBC News reports. The prince, who is 91, had been staying at Balmoral with the Queen.
This hospital visit comes two months after he was taken to hospital with a bladder infection in the days before the Diamond Jubilee concert in early June. He was also in the hospital over Christmas after an operation for a blocked heart artery.
No details on his condition were given, and he was last seen at public engagements in Cowes this week.
Update: Buckingham Palace officials are saying Prince Phillip was admitted to hospital due to a recurrence of the bladder infection he had earlier in the summer. They said it was likely he would stay for a few days for treatment.