A copy of the subpoena released Tuesday requests all documents related to proposals for the district's cornerstone technology initiative, which has been plagued with problems since its rollout last year. The requested records include proposal scoring documents, review committee files and employee information, among other materials.

     The program was championed by then-Superintendent John Deasy and approved unanimously by the school board in 2013. ...  

     While it remained unclear exactly what aspect of the iPad project - one of the biggest technological undertakings by an urban district in the U.S. - the FBI was investigating, legal experts and education observers immediately focused on Deasy's relationship with Apple and Pearson and the use of construction bond proceeds to spend money on a short-term device purchase.

     Ariel Neuman, a former federal prosecutor, said the government is likely investigating possible fraud involving the contracts.

     "If someone doesn't disclose a relationship they have with Apple," he said, "those could be material omissions that could lead to a wire or mail fraud case."

     Interim Superintendent Ramon Cortines had planned to move forward with equipping an additional 27 schools with learning devices, but said Tuesday he was canceling the contract and starting another. Cortines said he made the decision based on "identified flaws" in the L.A. Unified inspector general's report on device procurement.