In 1992, al-Kassar made arms sales in the millions of dollars to Croatia, Bosnia and Somalia, violating United Nations arms embargoes to all three countries.
In 1992, the Spanish government arrested Kassar for his alleged involvement in the Achille Lauro hijacking. In 1995, and he was found not guilty on all charges.
In July 2006, the government of Iraq placed Kassar at number 26 on their "most wanted" list, calling him one of the main suppliers for the Iraqi insurgents.
On 8 June 2007, the DEA (US Drug Enforcement Administration) announced the arrest in Spain of Monzer al Kassar. This was said to be linked to arms sales to rebels in Colombia.
Kassar was arrested just days before the Libyan convicted of the Lockerbie bombing was granted a second extraordinary appeal and 'just days after Blair went to Tripoli to negotiate a deal that would save him the embarrassment of a fresh appeal.' ('Confession of an Iranian Terror Czar')
Aviation Terrorism and Security - Google Books Result