The development comes just weeks after the Home Secretary Priti Patel said she would consider holding a public inquiry into the bombings

Ms Hambleton added: “The fact is we have had to beg and campaign and give up our lives as we knew them to fight for justice.
“Justice that was never facilitated by the authorities whose job it was to do so.
“How was it that for so long, after 21 people were blown up and more than 200 other innocent souls were injured, nobody was looking for the perpetrators?”
Paul Rowlands, whose father John Rowlands was killed in the Mulberry Bush, said it was a “positive step”.
He added: “It is, however, just a step and it does not detract from the fact that we need a public inquiry.”
John “Cliff” Jones, a postman at New Street station who had survived wounds serving in France and Belgium during the Second World War, died in the Mulberry Bush blast.
Reacting to the arrest, his 72-year-old son George Jones said: “Obviously it’s something positive, and it’s happened just with the anniversary (of the bombings) coming up.
“I hope this time West Midlands Police is more efficient than the original investigation team were.”
In April last year, an inquest jury found a botched IRA warning call led to the deaths of 21 people unlawfully killed in the atrocity.
Last month Priti Patel, the Home Secretary said she would consider holding a public inquiry into the bombings and has also pleged the meet the families of the victims.