Updated

Nearly a month after actress Hayden Panettiere's death, believed to be from an overdose, law enforcement sources say she died from a single pill of oxycodone laced with fentanyl. New reporting reveals her neighbors had grown suspicious of alleged drug dealers frequenting her West Hollywood condo in the weeks before her death, and her boyfriend Brian Hickerson was reportedly heckled about her death moments before a bar fight that led to his brother's arrest. The DEA is now reportedly probing an alleged dealer as part of the investigation. Panettiere, who had long documented her struggles with substance abuse and mental health, was also remembered during the Emmys' In Memoriam segment days after these new details emerged.