Two US Marines in hospital after suspicious letter sent to military base

[MechAg94]

http://www.independent.co.uk/news/world/americas/suspicious-letter-envelope-joint-base-myer-henderson-arlington-evacuated-latest-updates-a8231881.html

https://www.washingtonpost.com/news/local/wp/2018/02/27/two-patients-assessed-after-hazmat-incident-at-fort-myer-in-arlington/?utm_term=.49483d57e4d4

Eleven people are sick and three in hospital after a suspicious letter was sent to a military base just outside Washington DC.

The sick came down with nosebleeds and burning hands after the letter was opened at Joint Base Myer–Henderson Hall in Arlington, Virginia.

I guess the headline means two people are still in the hospital, but not all the details are there. 

A law enforcement official confirmed to CNN that the letter "contained derogatory, at time unintelligible and ranting language, and was addressed to a commanding officer at the base".

Police are still investigating if or how the sender, who has not been identified publicly, is affiliated with the base and the officer in question.

According to Specialist Nicholas Hodges who spoke to CNN, a corporal, gunnery sergeant and a colonel were among the sick. However, it is unclear who opened the letter.

Marines and civilians work in the building where the incident occurred.

The quote above was at the bottom of the first link.  Sounds like they might know who sent it.  We will see.