 In December 2003, the National Bureau of Criminal Investigation (NBCI) caught him at Dublin Port in possession of heroin and cocaine worth €750,000.He was sentenced to five years imprisonment in December 2005.On 6 October 2005, while on bail, members of the Garda National Drug Unit (GNDU) caught Boylan in possession of heroin and cocaine worth €1.7 million in the yard of his trucking firm.