Robert Durst is going to fight his latest murder case. The subject of HBO's docu-series The Jinx pleaded not guilty today in a Los Angeles court to first-degree murder in the death of his friend Susan Berman in 2000, according to Variety.

"I do want to say here and now, I am not guilty," Durst, in a neck brace and wheelchair, reportedly told the court.

Berman's execution-style murder at her California home was one of several deaths chronicled in The Jinx, and led to the series' most memorable moment, when Durst was confronted about similarities between an alleged letter from Berman's killer and his own handwriting. After again saying he had nothing to do with the murder, Durst made his way to the bathroom and famously said "What the hell did I do? Killed them all, of course." He hadn't realized his microphone was still on.

The series also re-examined Durst's possible connection to the disappearance of his wife in 1982, a case in which he was never charged with a crime; as well as Durst's killing and dismemberment of a neighbor in 2001, a case in which a jury acquitted him of murder on the grounds of self defense. 

Durst is set to serve seven years in prison after he pleaded guilty to gun charges earlier this year in New Orleans. As a convicted felon, he can't legally possess a weapon. After that sentencing, he was transferred to Los Angeles to begin his trial in the Berman case.