Exclusive: Police investigate whether spies placed incendiary package that caught alight in Birmingham

Counter-terrorism police are investigating whether Russian spies planted an incendiary device on a plane to Britain which later caught fire at a DHL warehouse in Birmingham, the Guardian can reveal.

Nobody was reported injured in the fire on 22 July at a warehouse in the suburb of Minworth that handles parcels for delivery, and the blaze was dealt with by the local fire brigade and staff.