All the explosions took place in first class compartments of trains at a time when a majority of Mumbaikars were returning home from office , railway control sources explosions Conflict.Attack.DetonateExplode .

Scotland Yard are searching for a group of about five people , including a " baby faced " teenage youth , in the wake of two bomb explosions Conflict.Attack.DetonateExplode at King ' s Cross and Euston stations in London yesterday .