Tipsheet

Emergency Situation at Fort Myer Military Base After a 'Suspicious Letter' Is Opened

Nearly a dozen people are ill at the Fort Myer military base outside the nation's capital after being exposed to an unidentified substance in a letter on Tuesday. Three individuals have been taken to the hospital, but are reportedly in stable condition.

ABC News reporters obtained more specifics on who was affected by the letter and the symptoms they experienced.

The U.S. Marines Twitter account offered the following update.

This is the third incident in recent weeks in which a letter with a mysterious substance has been addressed to high profile figures. Donald Trump, Jr.'s wife Vanessa Trump was sent to the hospital for decontamination after opening a piece of mail earlier this month that contained a suspicious white powder. Then, another letter with white powder was mailed to former President Barack Obama's Washington, D.C. office. That, however, turned out to be baby powder.

This post has been updated.