An investigation has been launched into waiting times for emergency and cancer care at the health trust which runs Scarborough Hospital.
Health regulator Monitor believes that repeated failure to ensure patients are seen quickly enough could indicate wider problems in how the trust is run.
The trust has failed to meet the quarterly national A&E waiting time target for the fifth time in nearly two years and there is evidence that some patients are waiting too long to be seen once referred for cancer treatment.
Although the trust has plans in place to improve its A&E performance and to cut cancer waiting times, Monitor is concerned that it has taken too long to fix these serious issues.
Frances Shattock, regional director at Monitor, said: “It is simply not acceptable for patients to be waiting too long in A&E or to be seen following a cancer referral. That’s why we are opening an investigation to understand the issues.”