Suspicious Powder - 1500 N Mill Ave Tempe, AZ 85281.

Suspicious powder reported in large commercial building at 1500 North Mill Avenue in Tempe, Arizona.

Units responding or on scene include: E32 E272 E275 C957S HM4 HM32 HM272 L4 L276 SQ8 BC2 BC271 TMPP01.