Two more suspicious letters with powder were delivered in D.C. today, one at Amidon Bowen Elementary in Southwest and one at Bibiana restaurant in Northwest.
FBI agents and local law enforcement agencies are investigating possible links between about 20 suspicious letters delivered in D.C., Dallas, Alabama, Massachusetts, Rhode Island, Connecticut, and New York City.
The six letters discovered in D.C.appear to be linked and all of them have been tested and are not hazardous, officials say.
Bibiana, at 12th and H Streets in Northwest, became the third Italian restaurant in D.C. to receive a suspicious mailing with white powder inside.
HazMat crews removed the letter for testing.
Thursday morning, another school received an alarming delivery. Office personnel found an envelope containing white powder at Amidon Bowen Elementary. The envelope was found before students arrived at school.
The D.C. Department of Health on North Capitol Street and Oyster Adams Bilingual School on 19th Street were evacuated yesterday, and before that, two other Italian restaurants earlier in the week.
A woman on a stretcher was taken out of the Department of Health after a letter containing white powder was found.
Just hours before that, the Oyster Adams Bilingual School on 19th Street was evacuated when another letter was found. It contained flour and children returned to school about an hour later.
This comes after two other places received letters earlier this week. One, at the Amorini Panini restaurant on F Street in Northwest D.C. Monday; the other was sent to a restaurant inside the Ronald Reagan building on Pennsylvania Tuesday.
Several schools in the Dallas area, a middle school in Connecticut, an art museum in New York City, a bank in Birmingham, Ala. and schools in Massachusetts and Rhode Island all received similar letters.
Law enforcement sources say, the letters aren't addressed to anyone in particular.
"We'll investigate who is responsible, because we can't have this type of drain on our federal, state and local authorities and not to mention the panic it causes the community," says Chief Carl Sferrazza of the Enfield, Connecticut Police.