ESSEX: Unseen police photos could help family killer Jeremy Bamber overturn his life prison sentence, his defence team has claimed.

The 50-year-old was found guilty of shooting his adopted parents, June and Neville, his sister Sheila Caffell and her twin sons, Daniel and Nicholas at their farmhouse in October 1986.

Bamber has always claimed the killings, which took place in Tolleshunt D’Arcy in August 1985, were carried out by Ms Caffell, a schizophrenic.

He says she killed the family and then turned the gun on herself.

And now new images - which show the weapon resting in different positions on Ms Caffell’s body and around a bedroom in the farmhouse - may prove he did not have a fair trial and show there were inconsistencies in the prosecution’s evidence.

This is not the first time Bamber has appealed his conviction.

In 2009, he lost a Court of Appeal challenge against the order he must die behind bars.

The Criminal Cases Review Commission is expected to announce whether or not it will to refer his case to the Court of Appeal on Monday.