The family of Kathie Durst is demanding that people they say delayed justice in her killing be held accountable.

A news conference was held Tuesday in front of the Westchester County Courthouse, an institution of justice that Kathie Durst's family says failed to properly investigate her disappearance 40 years ago.

Kathie's brother, Jim McCormack, questioned why justice has been delayed and called for answers in his sister's murder.

The family's call for justice come just weeks after a Westchester County grand jury indicted Robert Durst on a second-degree murder charge in the disappearance of Kathleen Durst in South Salem back in January 1982.

The charge comes after Robert Durst was sentenced to life in prison for the 2000 killing of his best friend Susan Berman, who is believed to have helped him cover up Kathie's 2000 death.

Robert Abrams, the McCormack family attorney, called for a full investigation into campaign donations given to Gov. George Pataki by Robert's younger brother, Douglas, back in the 2000s.

Abrams alleges the campaign donations influenced then-Westchester District Attorney Jeanine Pirro's decision to drop the investigation.

Abrams made it clear they want everyone who delayed justice to be held accountable.

"We are going to go after everybody - lawyers, prosecutors, police, friends of hers who got thousands and thousands to participate in his cover-up," says Abrams.

News 12 reached out to the Durst organization, which says these claims are baseless attacks.

A spokesperson for the Durst family calls the allegations baseless attacks that do not have documentation to substantiate the claims, saying, "In the last two years, Abrams has named the Durst Organization or Douglas Durst more than 30 times in court filings. Time and time again, these accusations have been summarily dismissed and thrown out by the courts."

A representative for Pataki said, "Mr. Abram's insinuations are plain nuts."

News 12 also reached out to Robert Durst and to Fox News, where Pirro has a weekly show, but has not heard back.