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A letter bomb is a kind of Muggle explosive device that can be placed within correspondence sent by Muggle Mail. If properly wired, the device will detonate upon the opening of the letter.

History

In 1991, after Harry Potter hesitated in bringing Vernon Dursley the mail, which included his first Hogwarts acceptance letter, Vernon joked that Harry might be "checking for letter bombs" and then chuckled at his own joke.[1]

Appearances

Notes and references

  1. Harry Potter and the Philosopher's Stone, Chapter 3 (The Letters from No One)