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Forensic expert explains technology used to capture I-40 shooting suspect Andrew Graney
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Forensic expert explains technology used to capture I-40 shooting suspect Andrew Graney

RALEIGH, N.C. (WTVD) — Following the Raleigh Police Department’s press conference earlier this week about a week of rush hour shootings along and near I40, officers worked hard to find and locate. Arrest the alleged suspect, 23-year-old Andrew Graney.

Patrick Siewert has 15 years of experience in law enforcement and currently serves as a mobile forensic expert at Archer Hall. He praises the work of the RPD.

“It’s a lot like the D.C. sniper shooting. I’d say from a public safety standpoint, it felt pretty good to me to jump into that. I mean, when you don’t have anything to go on, it’s very hard to reel that in. “It’s pretty good police work,” Siewert said.

ABC11 obtained search warrants describing two reports of single shots fired at homes in the area of ​​Centennial Ridge Way and Shire Lane.

At the same time, a gray Hyundai Sonata was seen on the security camera in the area where the searches were carried out. This information was used to collect and analyze cell tower data where the shootings occurred. The registered owner of the Hyundai appeared on five of the lists and gave officers a tip.

RELATING TO: NC State student accused of 12 ‘senseless and random’ shootings on or near I-40 in Raleigh

“Everyone’s cell phone is always connected, it’s always connected to a cell tower unless you put it in airplane mode or something like that. So that’s because the cellular network can find you, send you a message. You have to call or send a message, so those passive connections will always be available and this information will be logged by the mobile phone provider,” Siewert said.

He said mobile phone providers hold information for a period of time and a ‘tower dump’ can be obtained through a search warrant or emergency request. Law enforcement can also use information from connected vehicles.

“I don’t like to rely on a single source of information. If I can find something to confirm that, that would be great,” Siewert said.

Law enforcement used the same patterns and clues to keep Wake County safe and arrested Graney at his home Thursday afternoon.

Graney is being held without bail in the Wake County Jail.

SEE ALSO: Timeline of dozens of Raleigh shooting incidents on or near I-40 this week

MORE LIKE THIS: 911 calls reveal moments after Raleigh homes were hit by cars and guns: ‘Glass exploded’

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