A LAWYER claims he has unearthed fresh evidence that will prove the innocence of a convicted mass murderer.Giovanni Di Stefano said that a previously unseen log book sent to him by Essex Police's solicitor proved that Jeremy Bamber did not kill his adopted family in 1985.

A LAWYER claims he has unearthed fresh evidence that will prove the innocence of a convicted mass murderer.

Giovanni Di Stefano said that a previously unseen log book sent to him by Essex Police's solicitor proved that Jeremy Bamber did not kill his adopted family in 1985.

Instead, he claimed, the document indicated that his schizophrenic sister, Sheila Caffell, may have committed the murders at White House Farm, Tolleshunt D'Arcy.

Now Mr Di Stefano's submission is being probed by the Criminal Case Review Commission (CCRC) after a referral from the Court of Appeal, which recently ruled that the log book does constitute fresh evidence.

Bamber was sentenced to life imprisonment in 1986 for the murders of his adoptive parents, Nevill and June, Ms Caffell – a model known as Bambi – and her two six-year-old sons, Nicholas and Daniel.

Originally, police worked on the assumption that Ms Caffell had murdered everybody in the house before shooting herself. But later they accused Bamber of the killings, citing a sizeable inheritance as his motive.

At his trial, the jury heard that Nevill was found dead slumped downstairs in the kitchen of the house. June and the two twins were killed in their beds while Ms Caffell was found in her parents' bedroom with a gun.

Mr Di Stefano said yesterday: "We now have the evidence that this conviction is so unsafe and unsatisfactory and Jeremy Bamber must be bailed."

Yesterday a spokesman for the CCRC said the organisation was examining the newly discovered document.

"We are currently reviewing the case. We will always look into any new evidence or argument that is put to us and assess whether it is pertinent.

"If there is something the legal team think they have got – or the Court of Appeal thinks they've got – we will look at it.

"We regularly assess issues in cases with the applicant and their representatives and listen to their views on what they think needs looking at."

A spokeswoman for Essex Police said: "We are aware that Jeremy Bamber's lawyers are liaising with the CCRC and we will co-operate with the CCRC as necessary."