- Associated Press - Thursday, October 14, 2010

WASHINGTON | The FBI is investigating letters with white powder sent to two District of Columbia schools in the past two days, which follows a similar pattern at Houston schools and elsewhere since last week.

Officials say tests found nothing dangerous. Hazardous materials teams were called to Bancroft Elementary on Wednesday and to Adams Elementary on Thursday for letters in the school offices that seemed suspicious.

Fire department spokesman Pete Piringer says the schools were not evacuated, and no one became sick.

FBI Washington Field Office spokeswoman Lindsay Godwin says the FBI collected the letters and sent them to a regional laboratory. She says investigators haven’t determined whether they are linked to letters received at schools in other cities.