Hayden Panettiere's possible cause of death revealed: report

Hayden Panettiere’s potential cause of death was released on Monday, weeks after the "Nashville" and "Heroes" star died, according to a report.According to TMZ, Panettiere is believed to have died after taking an oxycodone pill laced with fentanyl. The outlet reports that she had a longtime drug dealer in Los Angeles who allegedly supplied her with black-market prescription drugs, including oxycodone.Sources told TMZ that the alleged dealer is now the target of a Drug Enforcement Administration investigation as authorities work to determine his relationship with the actress and trace the fatal pill back to its source.According to TMZ, its sources, all connected to the case and with direct knowledge, said Panettiere had a "long time drug dealer" in Los Angeles, who was providing her several black-market prescription drugs, including oxycodone.