Suspicious mail reportedly found at one of Sen. Cornyn’s Texas offices; Update: Tests negative for hazardous substances

#DEVELOPING: Dallas PD says Farmer's Branch PD leading suspicious mail investigation at Cornyn's North Texas office

— Bonnie Moon (@bonniemoon) April 17, 2013

BREAKING: Active hazmat scene at U.S. Senator John Cornyn's Farmers Branch office. Details on http://t.co/EiV8CDJhBR

— Sandra Turner (@wfaasandra) April 17, 2013

#khou U.S. Sen. John #Cornyn's office confirms police are investigating suspicious mail at his Dallas office.

— The Bishop (@BillBishopKHOU) April 17, 2013

Sen. John Cornyn's Dallas-area office receives suspicious letter, tests negative for hazardous substance, Fire-Rescue officials say

— Dennis Futoryan (@dfutoryan) April 17, 2013

Tests on suspicious mail sent to Sen Cornyn's Dallas office have come back negative http://t.co/HC0IPtGBmj

— FOX 7 Austin (@fox7austin) April 17, 2013