Data from the Maine Drug Enforcement Agency shows cocaine is making a comeback as heroin and fentanyl continue to plague the state.More than half of the arrests the agency made last year were for heroin and fentanyl, data from 2018 shows."Heroin and other opiates continue to be a dominant threat in Maine," MDEA Director Roy McKinney said. "Cocaine is making a comeback."Thirty-three percent of the 2018 arrests were for cocaine.And just like with heroin, cocaine is being cut with powerful, illicit fentanyl.The arrest data correlates with drug overdose data provided by the Maine attorney general's office, which shows an increase in cocaine-related deaths.Cocaine- and crack-related deaths rose to 25 percent of total overdose deaths in Maine for the first three quarters of the year, increasing from 22 percent in 2017 and 16 percent in 2016. Numbers for all of 2018 have not yet been released.Four out of five drug deaths involved more than one drug."The traffickers that are dealing in heroin and other opiates are also dealing in cocaine," McKinney said.In addition to the rise in cocaine, Maine drug agents are seeing more bulk heroin and fentanyl being brought into Maine to be packaged, rather than heroin or fentanyl that has been prepackaged out of state.Arrest history shows out-of-state drug dealers are choosing to live in Maine and package their drugs here."The drug trafficking groups use our highways as the means of distribution, it's just like any other commodity," McKinney said."We're focusing on those networks, those groups involved in the trafficking that will have the greatest impact on that supply."Maine drug agents arrested 599 people in 2018.Overall, Maine drug agents seized nearly 10 pounds of heroin and fentanyl and about 8 pounds of cocaine in 2018.The amount totals tens of thousands of dosage units.