A new study looking at drug use states, 89% of drug smugglers do not use drugs, and the only incentive they have is for financial gain. The study also said most of the drug dealers are non-Saudis, Al-Watan reported. The study conducted by Abdul Aziz Abdul Rahman Al-Khuzai, a master's degree student at Naif Arab University for Security Sciences focused on the role of non-Saudi workers in drug smuggling. The study is especially important as it sheds light on aspects of the issue which are still unclear to security officials; such as why certain nationalities are more heavily involved in drug dealing than others. The study showed that 96 percent of drug smuggling convicts arrived by plane and 68 percent of them are from Pakistan. The study also revealed that most of the drug dealers arrived on late night flights. According to the study, Pakistan nationals form the majority of cases involved in smuggling at 74 percent. Syrians form the second largest group followed by Lebanese and Palestianians. Hashish is the drug most often smuggled. In the study males form 99 percent of smugglers, of which 79 percent are married and 95 percent are Muslims. The average age of the smugglers is 30 to 50-years-old. Drugs most often smuggled into the country are respectively hashish, heroin, captagon pills, qat, cocaine, opium, amphetamine and marijuana.