 At that time, Vohra was an absconder in the Lahore Conspiracy Case.He asked to meet Azad in Delhi

Soon after, Vohra criticised suggestions of killing relatively minor Raj officials and proposed instead to blow up a train carrying the viceroy, Lord Irwin.Yashpal was at that time living in the same Delhi house as Vohra and the two men were experimenting with arrangements of batteries to blow lightbulbs, thinking that such might be used as a primitive method of detonating guncotton.