The series of strange white powder in the envelope causing panic in the U.S.

A series of schools in Washington to receive the letter "unusual" for two days 5 and 6 / 5, prompting many schools to be evacuated.

FBI investigators have visited many schools to radiate calm.

Federal Bureau of Investigation (FBI) said a total of 39 letters containing white powder sent to the school was moved to the FBI laboratory in Virginia for analysis and at the same time the FBI began an investigation find the owner of the mysterious envelope. Among the schools that the FBI released the list, no private school where the daughter of Barack Obama attending. In addition to the envelope above, there are 4 other suspicious letter was discovered when the post office is located in the city. Initial source from the FBI office in Washington said no dangerous substances have been detected in the envelope, and no one gets sick or injured due to exposure to these messages. However, police and security forces were deployed to ensure order and the surrounding area schools. Until 7-5 am, the school has reopened. These letters could have been sent from the Dallas area of ​​Texas and the envelope is similar to the letter had been sent to some schools in Washington last month also 10-2010.Address on all envelopes are not typed and sent to a specific person in the school, which is only addressed to the destination. These developments recall the fact that the envelopes containing anthrax bacteria were sent to addresses in Washington in 2001 caused over 20 deaths and injured, and causing further panic in the capital are the American people shocked after the attack also that year 11-9.