( CNN ) -- An Arizona woman is accused of injecting feces-laced fluid into her 66-year-old husband 's IV as the couple was alone in his recovery room following his surgery , police said . Rosemary Vogel , 65 , of Sun Lakes , was arrested after a warning alarm on the IV monitor sounded Thursday . She is now charged with attempted first-degree murder and vulnerable adult abuse , according to police and CNN affiliate KTVK . Her husband , whose name was n't released by authorities , is expected to survive as he recovers in Chandler Regional Medical Center , said Sgt . Joe Favazzo . KTVK reported that Vogel is a registered nurse and was a hospital employee at one time , according to the probable cause statement written by police . Vogel 's attorney could n't immediately be reached for comment . `` This is the first that I 've heard where fecal matter has been injected into an IV system , '' Favazzo told KTVK . After the IV monitor alarm sounded , the hospital staff entered the recovery room and found Vogel manipulating her husband 's IV , police said . The hospital found a brown substance in the IV line and immediately removed it from his arm , police said . Vogel allegedly tried to drain the fluid from the line into a waste basket , but a nurse intervened , police said . A test revealed the fluid contained fecal matter , police said . Vogel 's purse contained three more syringes . Two of them contained fluid , and the third appeared to have trace amounts of fecal matter , police said . Police do n't have a motive , Favazzo said . CNN 's John Newsome and Adam Shivers contributed to this report .
Nancy Smith , 65 , is charged with attempted first - degree murder . A nurse , she allegedly put feces - laced fluid into her year - old husband 's IV . The couple was in his operating room after his surgery . ` ` This is the first that I ' ve heard where fecal matter has been put into an IV , '' officer says .