Ted Cruz's Houston office evacuated after delivery: AP

A package addressed to Sen. Ted Cruz's Houston campaign headquarters caused a lockdown that was lifted later on Tuesday, a Cruz spokeswoman said. The Associated Press said authorities lifted the order after two people were apparently exposed to a "white powdery substance." Cruz's spokeswoman Catherine Frazier said no one from the campaign staff was taken to the hospital and that the package was opened in the lobby.

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