Susan Berman
The former real estate scion is also facing potential charges related to the disappearance of his first wife in the 1980s.
Westchester District Attorney Mimi Rocah decided in recent days to take the case to a grand jury.
The accused murderer told the court that he was "mostly" telling the truth, but admitted, "there are certain things I would lie about, certain very important things.”
Durst, 78, is accused of killing Berman to cover up the alleged murder of his wife, who disappeared in 1982.
WHAT'S HAPPENING
Douglas Durst reluctantly testified Monday that the two never got along and he feared his oldest sibling would kill him.
Prosecutors had just laid out their case for jurors last year when the coronavirus became a public health threat.
The wealthy subject of HBO's "The Jinx" has reversed course on the letter but maintains he did not kill his friend Susan Berman.
Durst once had his friend Susan Berman make a phone call pretending to be his missing wife, a witness testified.