Extra: Suffolk County DA Details How They Caught The Gilgo Beach Serial Killer Suspect

For more than a decade, the country has been intrigued by the mysterious and brutal murders known as the Gilgo Beach serial killings. 

Intrigue turned to shock and relief earlier this month, when the authorities announced the arrest of a suspect.

The story begins back in 2010 when human remains were found on Gilgo beach, Long Island New York.

Law enforcement found the remains of Melissa Barthelemy, and then Amber Lynn Costello, Megan Waterman and Maureen Brainard-Barnes... all of them women in their 20s working as escorts. 

Six other bodies were also found, but the investigation ran dry for years. 

Until now. 

59-year-old Rex Heuermann is now in custody linked to 3 of those killings. 

One big break came when law enforcement matched his DNA from a leftover pizza crust he tossed out to a hair found on a victim. 

Heuermann says he's innocent.

Days after the arrest, Suffolk Country District Attorney Ray Tierney, who ran the task force which eventually identified Heuermann, join FOX News' Alex Hogan on the FOX News Rundown to discuss how police caught the accused serial killer. 

Tierney discussed how nearly a hundred law enforcement officials worked together for years on this case, the critical pieces of evidence they found, and his hope that bringing the alleged suspect to justice will bring peace to the victims' families.

Due to time limitations, we could not include Alex Hogan's entire conversations in the FOX News Rundown segment that ran this week. On the FOX News Rundown Extra, you will hear the complete interview with Suffolk County District Attorney Ray Tierney.

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