SPRINGFIELD, Ill. -- One of the nation's leading operators of automated license-plate reading systems announced Monday it has paused its operations with federal agencies because of confusion and concern - including in Illinois - about the purpose of their investigations.

Flock Safety, whose cameras are mounted in more than 4,000 communities nationwide, put a hold last week on pilot programs with the Department of Homeland Security's Customs and Border Protection and its law enforcement arm, Homeland Security Investigations, according to a statement by its founder and CEO, Garrett Langley.

Among officials in other jurisdictions, Illinois Secretary of State Alexi Giannoulias raised concerns. He announced Monday that an audit found Customs and Border Protection had accessed Illinois data

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