U.S. ends student laptop webcam probe; no charges

The decision, announced by U.S. Attorney Zane Memeger, ended a six-month probe by the FBI into allegations that district employees might have spied on students through webcams on their school-issued laptops.

In a brief statement released by his office, Memeger didn't disclose details of the investigation, but said agents and prosecutors concluded that charges were unwarranted.

"For the government to prosecute a criminal case, it must prove beyond a reasonable doubt that the person charged acted with criminal intent," his statement said. "We have not found evidence that would establish beyond a reasonable doubt that anyone involved had criminal intent."

The announcement represented an unusual step for federal investigators. The FBI and U.S. Attorneys' offices rarely acknowledge when they begin or end a criminal inquiry.