Police today revealed that no further action is to be taken following an investigation into the death of a three-year-old Bradford girl.

Officers had exhumed the body of Naazish Farooq after discovering unusually high levels of chemicals in her blood.

She died in October 1999 after receiving treatment for cancer at St James's Hospital, Leeds.

A month earlier her parents Mohammed Farooq Khan and Safia Farooq had taken her to hospital when she felt unwell.

An inquest had heard that her condition was improving but then it suddenly deteriorated and she died.

An investigation was launched into the death of Naazish and two others at St James's Hospital and Leeds General Infirmary, focusing on the possibility of anaesthetic equipment being tampered with.

Detective Chief Superinten-dent Brian Steele, the officer leading the case, had told the inquest hearing last year that there were "unusually high levels of potassium" in her blood at the time of death.

The toddler's body was exhumed from Scholemoor Cemetery in November 1999 and taken to Sheffield where a post mortem examination was carried out.

It was re-buried eight months later.

Det Chief Supt Steele had described this the level of chemicals in Naazish's blood as "unexplainable" and said he felt her death was "consistent with potassium poisoning".

The inquest was adjourned until the police inquiries were completed.

Police had said they were investigating whether her death was caused by anaesthetic equipment at St James's Hospital being tampered with.

The police inquiry also focused on two other deaths and a number of potentially fatal incidents over an 18-month period.

A police spokesman said today: "After liaising with the Crown Prosecution Service, it has been decided that no further action will be taken in this case."

He added that officers had liaised with the family over the decision and that a file had been passed to the coroner.

One other case investigated during the inquiry is still being considered by the CPS.