BUFFALO, N.Y. (WKBW) — It's been 10 years since two convicted killers escaped from Clinton Correctional Facility in Dannemora, setting off one of the largest manhunts in New York State history.

"These two convicted killers were able to escape with the help of somebody on the inside," 7 News I-Team reporter Ed Drantch said.

The 2015 prison break of Richard Matt and David Sweat captivated Western New York and the nation as law enforcement officials searched for the dangerous fugitives in the mountains of the Adirondacks.

"A very violent, vicious murderer who tortured one of his victims," said Steven Nigrelli, former acting superintendent of the New York State Police.

I spoke with Nigrelli and two of my colleagues about what it was like while Matt and Sweat were on the run.

Nigrelli, who

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