Gov. Gavin Newsom vetoed a bill that would have tightened rules on how police in California use automated license plate readers, saying the regulations would impede criminal investigations.

The Legislature approved the proposal last month amid reports police were misusing the data, including a CalMatters story in June showing that officers on more than 100 occasions violated a state law against sharing the data with federal authorities and others outside the state.

The veto comes as new CalMatters reporting shows Riverside County Sheriff’s deputies appear to have violated internal policy by not documenting why they tracked certain license plates.

In his veto message this week, Newsom cited examples of how the proposed restrictions, which would have required police to better docume

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