The Chief Constable of West Midlands Police has told ITV News Central that it would be "impossible" to restart the investigation into the Birmingham pub bombings without new information.
In an interview with presenter Bob Warman, Chris Sims added however that "it certainly isn't closed".
In a statement, CC Sims added that an investigation carried out between 1991 and 1994 was of a "good standard":
“Nothing would give me more satisfaction than to bring those responsible for this atrocity to justice. However we have found no new evidence that would assist us in bringing anyone to justice for the pub bombings."
Police have confirmed to ITV News Central that a device left in Birmingham on the night of the pub bombings has been lost.
After almost 40 years, one of the six men jailed for the Birmingham pub bombings revisited the prison they were held in during their trial.