CNN CNN Newsroom May 4, 2013 20:05:00
>> we were stunned. >> reporter: authorities are concerned this is no accident. the medical examiner's office calling the death, quote, highly suspicious. klein was respected by peer and patients. now the fbi and police are conducting a criminal investigation into her death. authorities say the hospital where klein worked did have supplies of cyanide and she or someone she worked with could have had access to it. investigators executed a search warrant at the lab where klein's husband works. also at the university of pittsburgh. her husband called 911 after she collapsed. neither robert ferran...