Ted Cruz's office in Houston evacuated after delivery

HOUSTON – A spokeswoman for Republican Sen. Ted Cruz says a package addressed to Cruz’s Houston campaign headquarters caused a lockdown. Authorities later lifted an evacuation order after saying two people were apparently exposed to a "white powdery substance." The Houston Fire Department tweeted Tuesday that tests for hazardous substances were negative after the building floor where Cruz’s office is located was evacuated.  
Source: WA news