Between December 1996 and January 1997, 16 letter bombs disguised as holiday greeting cards were delivered through the mail to recipients in the United States and the United Kingdom.
Of these letter bombs, 13 were received at the offices of the Al Hayat newspaper in New York City, Washington, D.C., and London. One bomb exploded in London, seriously injuring two innocent people. The other three letter bombs were discovered in the United States at the federal penitentiary in Leavenworth, Kansas.
Each of the letter bombs bore an Alexandria, Egypt postmark dated December 21, 1996, and none contained a return address. The bombs were in plain white envelopes, with computer-generated addresses and various other markings.
The Rewards for Justice program is offering a reward of up to $5 million for information that brings to justice those responsible for these attacks.