NEW : Police identify the two victims . `` You have no idea the lab environment these chemicals or substances were produced in , '' Payne said . NEW : The suspect is in custody and charged with murder, possession of a firearm by a convicted felon ( felony ), unlawful carrying of a weapon on school grounds ( misdemeanor ), and other charges. Deaths of two Electric Zoo concert-goers believed to be linked to MDMA , police say . Electric Zoo promoters agreed to city 's recommendation that the festival be canceled .
NEW : Police identify the two victims . NEW : The suspect is in custody and charged with murder, possession of a firearm by a convicted felon ( felony ), unlawful carrying of a weapon on school grounds ( misdemeanor ), and other charges. Deaths of two Electric Zoo concert-goers believed to be linked to MDMA , police say . Electric Zoo promoters agreed to city 's recommendation that the festival be canceled .