Six teens appeared in court Wednesday to face various charges in connection with the murder.
Idris Elahi and Marquis Singleton, both 17, are charged with Chew's murder. Brian Rabell, 18, and three 17-year-olds, Tyree Bundy, Matias Perry and Rashad Perry (no relation), are all charged with accessory to murder.
McMahon blasted police, who initially said Chew was using his cell phone to buy drugs at the time of his murder, and that the attack was drug related, the paper reported.
"I'm not happy with the police department's conduct," McMahon said. He continued that the victim's actions that night had "nothing to do with his death", according to The Day.
In the warrants, police say Elahi and Singleton each had knives, and that Chew was stabbed six times while being beaten.
New court dates for the six teens have not been set.