Louisiana prosecutors, probing allegations of patient neglect and mercy killing after Hurricane Katrina, have issued subpoenas for 73 employees of one New Orleans hospital, a spokeswoman for the state attorney general's office said on Thursday.
Kris Wartelle, a spokeswoman for Louisiana Attorney General Charles Foti, said the subpoenas were issued on Tuesday to compel doctors, nurses and others at Memorial Medical Center, where 34 patients died during Katrina, to speak to investigators.
Tenet Healthcare, which owns the now-shuttered Memorial hospital, said it was cooperating with the investigation.
Prosecutors had previously delivered a search warrant and removed files from the hospital.
Dallas-based Tenet has said the company believes as many 11 patients on the Memorial campus had died before the hurricane but could not be removed before the storm hit.
Witnesses have said conditions at Memorial quickly deteriorated as temperatures soared above 100 degrees Fahrenheit (38 degree Celsius) inside the building and the sanitation system broke down.