The Los Angeles Unified School District has suspended purchases of additional Apple iPads following an FBI raid of documents related to the $1.3 billion purchase program, according to the Los Angeles Times.
FBI agents seized some 20 boxes of records related to the program Tuesday, according to the newspaper, which reported that a federal grand jury is examining the matter.
A subpoena required the nation’s second-largest school district to produce documents related to its deals with Apple and with education publisher Pearson, which furnished the curriculum, the Times reported.
The investigation represents a black eye for Apple, which is looking to spur flagging sales of its tablet by emphasizing its application in schools and in corporate settings.
Apple declined comment.
This article originally appeared on Recode.net.