The teen charged with murder and criminal possession of a weapon in the slaying of a 17-year-old was stoic and silent as he was led out of the 70th Precinct Wednesday. 

David Lopez, 17, and his mother Barbara Galloza, of the Bronx, are in custody in the death of 17-year-old Rohan Burke.

Lopez is charged with murder and criminal possession of a weapon.

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Galloza, 38, is charged with hindering prosecution and tampering with evidence. Both turned themselves in on Tuesday.

According to the criminal complaint, Galloza was caught on surveillance video grabbing the knife out of her son's hands after he allegedly stabbed Burke in the upper chest area. Police say Burke then ran into a pizzeria pleading for help, but his wounds were too severe.

Police are looking for one more suspect in this case. They are urging another young man, who police call an accomplice, to turn himself in.

Burke's mother Tracey Beckles has set up a GoFundMe account to help with funeral efforts.