White powder discovered inside three offices of managers at Tempe St. Luke’s Hospital on Sunday and early Monday turned out to be a harmless sugar-based substance.
Hazardous materials crews were called to the hospital, 1500 S. Mill Ave. shortly after 9 p.m. on Sunday after someone discovered the substance folded inside a white piece of paper, according to Mike Reichling, Tempe Fire Department spokesman.
After testing the powder, it was discovered that the substance was harmless.
Police then were called back out to the hospital about 6:30 a.m. Monday for a second discovery of white powder. While investigating it, officers found more white powder and called the fire department to investigate.
In two of the offices, the powder was found inside mail slots. In the third, it was discovered under the door, Reichling said.
Some of the powder was sent to the Arizona Department of Health Services lab to review for possible evidence that might help investigators identify the perpetrator, Reichling said.
No evacuations were made during the incidents.