Woman accused of selling lethal fentanyl-laced pills to Robert De Niro’s grandson warned undercover cop to ‘be careful’ with the drugs: ‘My friend just died’

NEW YORK — A young woman accused of selling the fentanyl-laced fake oxycodone pills that killed Robert De Niro’s teenage grandson warned an undercover cop not to take “more than one at a time” before her arrest because, she said, her friend had “just died,” authorities revealed after she appeared in court Friday. Wearing a black T-shirt and white sneakers with the laces taken out, Sofia Haley Marks, 20, of Manhattan, was held without bail at Manhattan federal court a day after her arrest on charges alleging she dispensed the pills that caused Leandro De Niro Rodriguez’s overdose death. The pet...