Investigators don’t believe the suspected Gilgo Beach killer is responsible for the unsolved deaths of four sex workers found dead just outside Atlantic City in 2006.

Rex Heuermann, 59, is charged in the deaths of Amber Costello, Megan Waterman, and Melissa Barthelemy and is the prime suspect in the death of Maureen Brainard-Barnes. The four women were killed between 2007 and 2010, and their bodies were found wrapped in burlap sacks just off the highway on Gilgo Beach in December 2010.

Suffolk County Police Commissioner Rodney Harrison said earlier this month that investigators would look again at the “similar” Black Horse Pike murders, in which the four women were found in a watery ditch behind a row of beachfront motels in Egg Harbor Township, just outside Atlantic City, as CrimeOnline reported.

The murders of Kim Raffo, 35; Tracy Ann Roberts, 23; Barbara Breidor, 42; and Molly Dilts, 19, remain unsolved.

“We don’t believe that the sex workers killed in Atlantic City are connected to Rex Heuermann,” Harrison told The New York Post, saying that Atlantic City investigators believe a different person is responsible.

Harrison did not say why detectives have reached that conclusion.

Heuermann, who has pleaded not guilty to six counts of murder, is due back in court on Tuesday.

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[Featured image: Rex Heuermann/Suffolk County Sheriff’s Office via AP]