Justin P. Morin, sold UMass student Darby Fassett five bags of "American Gangster" heroin

Justin P. Morin, 21, of 20 Jackson St., sold UMass student Darby Fassett five bags of "American Gangster" heroin on the day before Fassett was found overdosed in his Hadley home, according to police. Fassett was rushed to Cooley Dickinson Hospital in Northampton where he was declared dead on arrival. Although Morin was charged with distribution of heroin in Northampton District Court, a Hampshire County grand jury found that there is sufficient evidence to indict him for involuntary manslaughter.