Massachusetts State Police found years-old records in fraud scandal after telling prosecutors they didn’t exist

About a year and a half into sprawling criminal investigations of trooper payroll fraud, Massachusetts State Police officials this summer suddenly unearthed boxes of key documents that prosecutors had long sought but State Police said didn’t exist, according to a recent court filing.

The newly discovered citation and trooper activity records, most of which are believed to be from 2014 and earlier, point to wrongdoing by at least one trooper — and potentially much more.

The emergence of such files could lead to additional criminal charges, legal experts said and raises more concerns about State Police record-keeping and its ability and willingness to investigate its own troopers.