DNA developments mean that Jack the Ripper has been 'finally unmasked' according to an author who found a piece of evidence.

Author Russell Edwards has used cutting-edge technology to produce a composite image of 'Jack the Ripper' Aaron Kosminski, who was a suspect at the time of the murders in east London 128 years ago

Jack the Ripper butchered and murdered at least five women in the Whitechapel area of east London over just a four month period from August to November 1888

It was after Mr Edwards used DNA evidence from the shawl of one of his victims to "prove" that Jack the Ripper was actually Aaron Kosminski, a Jewish immigrant from Poland who was one of the key suspects at the time of the horrific Whitechapel murders.