Ricin detected in envelopes seized at Pentagon mail facility

Parcels sent to Pentagon test positive for ricin- officials

Ted Cruz's office in Houston involving a "white powdery substance" that turned out to not be hazardous.

The US Secret Service said it had obtained a "suspicious envelope" addressed to President Donald Trump on Monday, the same day at least two suspicious packages were intercepted at a screening center for Pentagon mail, according to a Defense Department spokesman.

The mail distribution center where the mail arrived and was flagged isn't in the Pentagon but nearby, the officials said.

Ricin is a poison made from castor beans.

Authorities have quarantined all US Postal Service mail received at the Pentagon's screening facility.

Pentagon authorities showed reporters the secure area where mail is received.

That was quick: "People familiar with the process said Tuesday that the FBI investigation into the allegations of sexual misconduct against Judge Kavanaugh could wrap up very soon, well ahead of the end-of-week deadline". The official spoke on condition of anonymity because the official wasn't authorized to speak publicly ahead of FBI's release of its findings. That same year, USA counterterrorism officials said they were increasingly tracking the possibility that al-Qaida would use ricin in attacks against the United States. There is no known antidote to ricin but emergency medical care immediately after exposure can prevent death.

Two years later, a MS man sent letters containing ricin to President Barack Obama and a Republican senator in an elaborate attempt to frame a rival. "Ricin-associated illness can not be spread from person to person through casual contact". No word yet on how much of the poison was discovered, or if anyone came in contact with it.

The packages were addressed to one person. That same month, an Islamic extremist ricin attack planned for Germany was foiled.