Police are investigating allegations of mistreatment and neglect by a healthcare professional at Blackpool Victoria Hospital.
Police were contacted by Blackpool Teaching Hospitals NHS Foundation Trust on November 8 after concerns were raised about the care provided to some patients.
The allegations relate to the alleged mistreatment and neglect of patients on the stroke unit in November 2018.
A healthcare professional was arrested in relation to these allegations. She was arrested on suspicion of administering any poison or noxious thing with the intent to injure and ill treatment or wilful neglect. She has been bailed to December 6.
The healthcare professional has been suspended.
Officers are at the very early stages of their investigation and are working closely with Blackpool Teaching Hospitals NHS Foundation Trust.
Enquiries are on-going.
Det Chief Insp Jill Johnston, of Lancashire Police said: “This arrest is part of an on-going investigation into allegations of mistreatment of patients by a healthcare professional at Blackpool Victoria Hospital.
“The inquiry is complicated and we have a team of specialist detectives working on this case who are also offering support to those families who have had loved ones identified as potentially being involved.
“Our priority and the priority of Blackpool Teaching Hospitals NHS Foundation Trust is to ensure the safety of patients. We are working closely with the Trust as part of the investigation.”
Anyone with information can contact police on 101 quoting log reference 0553 of November 14.