Politics | House of Representatives House Chamber Evacuated Over Suspicious Powder Substance determined to be harmless, authorities say By Nick McMaster Posted Sep 13, 2010 2:09 PM CDT Copied A worker climbs the Capitol dome in Washington, Monday, Sept. 13, 2010, doing maintenance. (AP Photo/Manuel Balce Ceneta) The House chamber was evacuated today after a suspicious white powder was found on the gallery floor, the Washington Post reports. "Nothing hazardous was found," a police spokeswoman said this afternoon. The House is still on recess until tomorrow, so only pages were present in the chamber when the powder was discovered. Read These Next Original member of O'Jays may have been victim of serial killer. Something else being smuggled in from Mexico: cacti. 'Miracle fruit' is helping chemo patients taste again. These movies should've won best picture at the Oscars (per WaPo). Report an error