Family appeal to find 'third Birmingham pub bomb'
28 November 2013 Last updated at 08:51 GMT
The family of a woman killed in the Birmingham pub bombings has urged police to find an alleged third device which they claim could reveal who was responsible.
Retired Det Insp Eric Francis said it was left in a doorway on Hagley Road in Edgbaston on the night of the 1974 attacks but never detonated.
The family of Maxine Hambleton, one of 21 killed in the two blasts, said West Midlands Police had told them they once had the device but had since lost it.
"It had a controlled detonation which means it would be pretty much intact and would still have DNA still on it," said Maxine's sister Julie Hambleton.
Mr Francis said the device proved the Birmingham Six - the men jailed and later acquitted over the attacks - were not responsible.