Accused Gilgo Beach serial killer Rex Heuermann is being charged with a seventh murder: the death of Valerie Mack, officials said.

The District Attorney’s office lacks the resources to meet "ambitious" deadlines imposed by the judge overseeing the Gilgo Beach case, the DA said.

A new sketch of the Gilgo Beach victim known as "Asian Doe," whose remains were recovered along Ocean Parkway in April 2011, was released Monday.

Suffolk County District Attorney Raymond Tierney joined ABC News' “Good Morning America” on Friday.

Gilgo Beach suspect Rex Heuermann has been charged with two additional murders and is now accused of killing six women dating as far back as 1993.

The search for missing sex worker Shannan Gilbert led to the grisly discovery of 10 other bodies on a stretch of beach along Long Island's South Shore.

Investigators are searching a wooded area in Manorville, New York, as part of the Gilgo Beach murders investigation, law enforcement sources told ABC News.

The estranged wife of alleged Gilgo Beach serial killer Rex Heuermann maintains that he is "not capable of the crimes he is accused of," her attorney said Wednesday.

Prosecutors in Suffolk County, New York, have charged alleged serial killer Rex Heuermann with murdering Maureen Brainard-Barnes.

Rex Heuermann is already charged with killing three women. He will return to court on Tuesday.

Lawmakers are pushing for an expansion of a state law that prohibits convicts from profiting from their crime.

The estranged wife of Gilgo Beach, New York, murder suspect Rex Heuermann attended one of his court appearances for the first time on Wednesday.

Gilgo Beach suspect Rex Heuermann is not a "monster" and maintains his innocence, his attorney said.

For years, investigators searched for the person responsible for dead bodies that were found on a Long Island beach. This summer, they caught a big break.

Authorities are investigating a possible link between Gilgo Beach accused killer Rex Heuermann and South Carolina woman Julia Ann Bean who was last seen alive in 2017.

A judge has ordered suspected Gilgo Beach serial killer Rex Heuermann to turn in a DNA swab.

Authorities have identified another victim in the Gilgo Beach investigation.

There's no apparent connection between Gilgo Beach murder suspect Rex Heuermann and the 2006 deaths of sex workers near Atlantic City, New Jersey.

Asa Ellerup, wife of Rex Heuermann, told ABC News Monday that "everything is destroyed" following the arrest of her husband.

Authorities have concluded their search at the "cluttered" house belonging to Gilgo Beach, New York, murder suspect Rex Heuermann.

Police are digging up the backyard of Gilgo Beach, New York, murder suspect Rex Heuermann.

The relatives of Gilgo Beach, New York, murder suspect Rex Heuermann are "going through a devastating time," their attorney said.

Rex Heuermann's defense attorney spoke exclusively with ABC News on Tuesday in front of the Suffolk County courthouse.

The wife of alleged Gilgo Beach serial killer Rex Heuermann has filed for divorce nearly a week after his arrest in the case, according to a new court filing.

Rex Heuermann, who has been charged in the murders of three woman, appears to fit into a profile of serial killers with double lives, a former FBI agent said.

What we know and don't about the Gilgo Beach suspected serial killer case.

Police revealed a new piece of evidence in the Gilgo Beach murders.

Police released footage of Megan Waterman, one of the victims, who was last seen at a Holiday Inn Express in New York.

A man has been arrested in connection with the Gilgo Beach murders.

Heuermann has been charged with the murders of Melissa Barthelemy, Megan Waterman and Amber Costello, and been called the prime suspect in the death of a fourth woman.