PORTER — New Indiana State Police laboratory technology led Porter police to arrest a Chesterton man Thursday in connection with a June 5, 2017, robbery.

Porter Police Department Capt. John Lane said video of the robbery at Zip Foods, 29 Franklin St., in Porter, led investigators to David Graham, 24, of Portage, who was charged last June with robbery.

Graham led investigators to a second suspect, Robert A.E. Lewis, 23, of Chesterton. Lewis was charged Thursday with robbery, a level 3 felony. A warrant was served at Porter County Jail, where he was being held on unrelated charges.

Police said Graham told investigators about latex gloves that were worn during the robbery and thrown out the car window afterward. The gloves were recovered near Zip Foods.

Initial test results at the state police lab said there was a mixture of DNA that could not be separated.

After new technology arrived at the lab at the end of 2017, the gloves were retested, and DNA from both Graham and Lewis were detected, police said.

About $500 was taken from the convenience store, police said.

Recent arrests booked into Porter County Jail