A surgery in Peterborough has closed temporarily following the sudden death of one of its senior GPs.
Dr John Youens was a full-time partner at Bretton Medical Practice and specialised in the care of its diabetic patients.
NHS Peterborough said the surgery closed on Thursday.
Patients have been contacted and their appointments postponed or rearranged at neighbouring surgeries, it added.
Dr Andy Liggins, director of public health, said: "NHS Peterborough is saddened by the tragic news of the death of Dr Youens and we send our deepest sympathy and condolences to his family and colleagues.
"We will be doing all we can to support Bretton Medical Practice during this very difficult time, and while we apologise for any inconvenience this may cause, we hope that patients will understand given the circumstances."