The World Trade Center bombing occurred on February 26, 1993 and was planned by a group of conspirators including Ramzi Yousef, Mahmud Abouhalima, Mohammad Salameh, Nidal A. Ayyad, Abdul Rahman Yasin and Ahmad Ajaj.
Ramzi Yousef arrived illegally in the United States on September 1, 1992
, traveling with Ahmed Ajaj from Pakistan, though both sat apart on the flight and acted as though they were traveling separately. Yousef tried to enter with a false Iraqi passport, claiming political asylum. Yousef was allowed into the United States, and was given a hearing date.
Ahmed Ajaj tried to enter with a forged Swedish passport
, though it had been altered and thus raised suspicions among INS officials at John F. Kennedy International Airport. When officials put Ajaj through secondary inspection, they discovered bomb making instructions and other materials in his luggage, and arrested him. The name Abu Barra, an alias of Mohammed Jamal Khalifa, appeared in the manuals.
Eyad Ismoil entered the United States in 1989 on a student visa. Ismoil overstayed his student visa
and re-located to New York City on February 22, 1993 to begin preparing for the 1993 World Trade Center bombing.
Mahmud Abouhalima after his American tourist visa expired, applied for amnesty claiming to be an agricultural worker
and was accepted as a permanent resident under the Immigration Reform and Control Act of 1986
Mohammed Salameh, a Palestinian illegal
alien later involved in the 1993 World Trade Center bombing
Abdul Rahman Yasin was able to use his American birth citizenship to obtain a US passport from the U.S. embassy in Amman, Jordan
, and thus enter the United States.