The Brief Two people face first-degree murder charges in separate, unrelated fentanyl overdose deaths in Hillsborough County. Deputies arrested Robinson Stlouis and Haley Williams on warrants after toxicology reports revealed fatal fentanyl levels, according to the Hillsborough County Sheriff's Office. Two people have been arrested and charged with first-degree murder in separate investigations into a pair of deadly fentanyl overdoses in Hillsborough County, according to the Hillsborough County Sheriff's Office. Williams was found with additional tainted, pressed fentanyl pills — more than 300 — and was arrested, according to HCSO. "They can press these fentanyl pills to make them look like anything you want."