The gang smuggled illicit drugs inside hollow industrial rollers on truck from
Belgium, through
England to the
Republic of Ireland. The investigation began when a Belgian warehouse worker noticed that the same rollers kept returning to the depot. Once the connection to England was found, Belgian police notified their counterparts there. In 2007 rollers were seized by
Gardaí seized the rollers on an industrial estate in
Dublin. Several people were arrested and jailed but Mulvey moved to Spain shortly before arrests. ==On the run==