← All EvidenceDirectJoseph W. Sullivan — Direct Joseph W. Sullivan Aloke Chakravarty
Digital Evidence
Mercedes tracking location information
Sullivan recalled that the Mercedes tracking service initially located the SUV at approximately 87 Dexter Avenue in Watertown. He broadcast the location on two police channels and remained on the telephone for updated coordinates, while qualifying his recollection of the system's accuracy and nearby address variations.
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Sullivan used the tracking locations to coordinate police broadcasts and responding officers' arrival near the Mercedes; his account did not identify the vehicle's occupants.