CBS News recently released a video which describes the way in which police technology was used to track down Tamir Hartsock, 23, of Glenside, who was arrested earlier this week on numerous felony charges related to the straw purchasing and trafficking of 15 firearms, four of which have been recovered and connected to multiple homicides and other violent crimes in Philadelphia.

For our previous coverage on Hartsock’s arrest, you can click here.

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Screengrab courtesy of CBS News