A California man who was recorded on video rapping, “I killed my b---- and buried that b---- in the f------ dirt”, is now being charged with the murder of his girlfriend, who has been missing since July.

Robert Anthony Camou, 27, of Monrovia, is accused of killing 31-year-old Amanda Custer while out on bail for a pending domestic violence case, the Los Angeles County District Attorney’s Office announced Wednesday. Camou had previously strangled Custer and threatened her with a Taser in April, according to prosecutors, and her body has not been found since she disappeared around July 29.

The next day, Camou showed up at an open mic session at a bar in downtown Los Angeles and rapped about killing and burying a woman, Los Angeles County Sheriff's Lt. Scott Hoglund said.

“Right here I’m the gangster in this house,” the man says in the video, which was obtained by KTLA. He then adds “I killed my b---- and buried that b---- in the f------ dirt”.

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Before walking off stage, the man says “the cops trying to look for me… trying to shut my mouth.”

Custer was last seen the morning of July 29 outside Camou's home in suburban Monrovia, east of Los Angeles, following some type of altercation between Custer and Camou, Hoglund said in a press conference in August.

"Like I reported earlier, there was some evidence of an assault in the bedroom of Mr. Camou. There was blood recovered from the bedroom as well as there was evidence and witnesses that stated Mr. Camou placed the victim Amanda Custer's lifeless body in the back storage cargo area of a 2017 gray Prius," Hoglund said.

Police tracked Camou in several cities before he reached Lytle Creek and turned south. There is a five-hour gap from there to when he was next seen in the midafternoon at an ATM in the foothill city of Azusa, which is back toward Monrovia, Hoglund said.

"So we have a five-hour gap of time where we do not know where Mr. Camuo or Amanda Custer were," he had said.

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Police located Camou in his car at 2:45 a.m. on July 30 in downtown Los Angeles. He refused to surrender for five hours until a SWAT team filled his car with tear gas.

The man who recorded the rap video told news media he later saw Camou in TV reports.

"Investigators have vetted that video and have determined that was the suspect in this case, Robert Camou, rapping about killing a female and burying her in the dirt," Hoglund said.

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Camou has been charged this week with one count of murder with a special circumstance allegation of killing a witness and an allegation that he was out on bail when he committed the crime. If convicted, he could face life in prison without parole or the death penalty.

He is set to appear in court again on Oct. 10. The Pasadena Police Department and the Los Angeles County Sheriff’s Department are still investigating Custer’s disappearance.

Fox News’ Brie Stimson and the Associated Press contributed to this report.