Health chiefs are having weekly meetings with Colchester Hospital to ensure there are no further delays in treating cancer patients.
The Clinical Commissioning Group for North East Essex has taken the step after claims were made that some staff at the hospital had been bullied into falsifying waiting-time data to help it meet targets.
It's also working with NHS England and the hospital to carry out a wider investigation which it says will go beyond the sample cases seen by the Care Quality Commission.
The mother of a four-year-old boy from Essex has demanded 'justice' for her son after it was revealed Colchester Hospital had falsified cancer care data.
Danielle Uren believes her son Mackenzie Cackett might still be alive, had it not been for mistakes in his diagnosis and treatment at the hospital.
The hospital's trust has been reported to the police after staff complained of a cover-up in which they said they were "pressured or bullied" into falsifying data relating to cancer patients.
Click below to watch Serena Sandhu's report.
A Care Quality Commission report says staff at Colchester Hospital were bullied into falsifying waiting time data for cancer treatment, treatment that was sometimes so overdue the hospital admits it may have put patients' lives at risk. Now police have been called in to investigate.
The Chief Executive of Colchester Hospital has apologised to patients who he says have been "let down" by the trust.
Dr Gordon Coutts was giving his reaction to today's news that the hospital has been reported to Essex Police following complaints from staff that they were being asked to falsify data on cancer patients.
Staff told inspectors they were "pressured or bullied" to change data relating to patients to make it look as if they were being treated in line with national guidelines.
Colchester hospital has now set up a special helpline so any cancer patients or relatives who have concerns can get in touch.
The number to ring is 0800 028 2026 and it will be staffed from 8am to 8pm seven days a week.
Colchester MP Sir Bob Russell has described today's announcement about Colchester hospital as "devastating".
The hospital has been reported to police following complaints from staff that they were being "pressured or bullied" to falsify data relating to cancer patients.
Sir Bob Russell said: " The apparent cover-up is of the utmost seriousness and there can be no justification under any circumstances."
But he also stressed that every year around 6,000 people attend Colchester’s hospitals for cancer treatment, and that the number subject of the investigation was just 30 – “but that is 30 too many.”
Sir Bob added: “From my perspective, what has been unearthed does not indicate that such systematic failings exist throughout the Colchester Hospital Trust.
"Staff at both Colchester General Hospital and Essex County Hospital, and by that I mean all staff, medical and support, have my total confidence that they are doing a first class job for which all of us should appreciate."
Colchester Hospital has been reported to the police following complaints from staff that they were being "pressured or bullied" to falsify data relating to cancer patients.
The Care Quality Commission ruled that a number of cancer patients had suffered from what they deemed as "undue delays" at the hospital.
The CQC carried out an unannounced inspection in August and September, and inspectors noticed a number of "inaccuracies" with waiting time data relating to cancer treatment.
Furthermore, several staff told inspectors that they were were being "pressured or bullied" to change data relating to patients.
This was allegedly to give the illusion that people were being treated in line with national guidelines.
This meant that some patients may have failed to get the treatment they needed in time.
The CQC has now passed on its findings to Essex Police.
Two Essex hospitals will be featured in a report looking into high mortality rates which is due to be released this afternoon.
Colchester and Basildon hospitals were both investigated by the Keogh review team earlier this year.
The hospitals are two of 14 nationwide to be singled out for inspection.
Hospitals are under fresh scrutiny after concerns over the service patients are getting.
A survey of Britain's A&E departments shows waiting times at a 9-year high, with more than 300,000 people waiting longer than 4 hours to be treated.
The report comes as inspectors arrived at Colchester General Hospital to investigate high mortality rates.
It's one of 14 hospitals across the UK with higher than expected death rates.
Colchester Hospital has been severely criticised by the Essex Coroner for the care given to a man who died 3 days after routine surgery.Read the full story ›
Essex MPs have given their support to Colchester Hospital managers after news the Trust was being investigated over high death rates.
Colchester Hospital University NHS Foundation Trust was one of five trusts to be targeted by inspectors following a damning report into years of abuse and neglect at Stafford Hospital. But MPs say the Government was wrong to single out Colchester. Serena Sandhu has more.