GREENVILLE  –  Hayden Panettiere’s boyfriend and his brother called 911 to say the actress was unresponsive Sunday at a South Carolina apartment complex where medics would later declare her dead, according to a newly released police report. Panettiere, known for playing an indestructible cheerleader in the series “Heroes” and a country music sensation in the show “Nashville,” was found in cardiac arrest at the residence where she was staying temporarily in Greenville on Sunday afternoon, a coroner’s office said. No cause of death has been released. A Greenville police officer who responded to the scene interviewed brothers Brian and Zach Hickerson, who said they called 911, according to a police report released Tuesday. “I spoke with Zach Hickerson first, he advised this was his brother’s girlfriend,” the officer wrote in the report. Brian Hickerson showed the officer a bag of Panettiere’s medications, the report said. Many details of the police report are redacted, including a list of Panettiere’s medications. Panettiere’s shocking death sent waves of grief from Hollywood to Ukraine, where the father of their child mourned the beloved actress and activist who battled a host of struggles. “Our family is going through a time of profound shock and grief,” Wladimir Klitschko, her ex-partner and a former world heavyweight boxing champion from Ukraine, posted Tuesday on X. “She built an incredible career through immense talent, while also facing the darker sides of a very demanding industry.” Just two weeks before her death, Panettiere shot a campaign video for PETA, protesting marine parks like SeaWorld, the organisation wrote in a statement. In the video, the actress lay in a bathtub, asking viewers to imagine a life confined to a tank, the way animals living in marine parks do. “The world has lost a kind soul and the animals a fierce ally, and everyone at PETA holds her memory close,” the organisation wrote. Panettiere soared to stardom in the early 2000s before stepping back from the public spotlight as she battled addiction and mental health challenges and recently released a memoir describing her struggles. On Sunday afternoon, emergency personnel responded to a 911 call about a “reported cardiac arrest” in Greenville, the county coroner’s office said Monday. Panettiere, a California resident, was found unresponsive inside the South Carolina residence “where she had been temporarily staying,” the coroner’s office said. The address is at an apartment complex, local police said. Dispatch audio obtained from Broadcastify.com references a possible overdose, though authorities have not addressed whether an overdose actually took place. After medics tried to resuscitate her, Panettiere was pronounced dead at the scene. An autopsy performed Monday revealed no signs of trauma that would have contributed to her death, the coroner’s office said. But the official cause and manner of death are pending the results of additional testing.