Suffolk County authorities, state police and the FBI say they will be providing an update on the Gilgo Beach murders investigation on Friday.

They are set to hold a press conference at 10:30 a.m.

Rex Heuermann, of Massapequa Park, was arrested in July in connection with the case that has spanned over a decade.

WATCH: DOCUMENTARY AND BACKGROUND INFORMATION - Gilgo Beach: Unsolved

The 59-year-old is charged in the deaths of three women and is the prime suspect in a fourth killing.

Heuermann has pleaded not guilty to all the charges.