The underage suspect in Louisiana State University sophomore Madison Brooks' alleged rape will be tried as an adult after a grand jury indicted him on Louisiana's most severe sexual assault charge.

Desmond Carter, whose name had been withheld until Wednesday's grand jury hearing because he was 17, was indicted on first-degree rape, which is punishable by life in prison without parole, as well as third-degree rape. 

Another suspect in the case, 18-year-old Kaivon Washington, was also charged with third-degree rape, which in Louisiana involves sexual intercourse that "is deemed to be without the lawful consent of a victim," according to state law.

The other two suspects – Casen Carver, 18, and Everett Lee, 28 – were charged with principal to third-degree rape for allegedly sitting in the front of the car while Brooks was sexually assaulted by Washington and Carter in the back seat after a night of drinking.

AS LSU REELS FROM MADISON BROOKS ALLEGED RAPE AND DEATH, CRIME TORMENTS COLLEGE TOWN

Updated photo LSU student Madison Brooks

An updated photo of LSU student Madison Brooks, who was fatally hit by a car after an alleged rape earlier this month. (The Brooks family)

The district attorney has discussed upgrading charges against the other suspects as more evidence is presented to the grand jury, but DA Hillar Moore's office didn't immediately return Fox News Digital's request for comment on Thursday. 

Kerry Miller, the Louisiana attorney representing Brooks’ mother, Ashley Baustert, told Fox News Digital in an email that Baustert "is pleased with this development."

"She's thankful to the hard work put in by all members of the law enforcement team who gathered and presented evidence to the grand jury," Miller said. 

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Brooks, a 19-year-old LSU student, met her alleged attackers while drinking at Reggie's bar before she was allegedly raped and let out on the side of a busy highway near her home, where she was fatally struck by a car in the early morning hours of Jan. 15. 

Brooks' death cast a spotlight on LSU's history of mishandling sexual assaults and rapes as well as increased crime in the college town's social hotspot, Tigerland, and the city of Baton Rouge.

People dressed in semi-formal clothes leave a church

Madison Brooks' father, (foreground) John Brooks, and mother (fuscia dress, above) Ashley Baustert leave the church following their daughter's funeral in Covington, LA, Friday, February 3, 2023. Brooks, a 19-year-old sophomore at LSU, was allegedly raped before she was fatally struck by a car in the early morning hours of Jan. 15. (KR/Mega for Fox News Digital)

She was laid to rest on Feb. 3 in Covington, Louisiana.

"My beautiful angel, one and only daughter, and best friend that was taken way too soon. I promise to honor you, your legacy and will do everything in my power to ensure no other family has to endure the pain we have faced," Baustert wrote in a Facebook post. 

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Meanwhile, attorneys representing the suspects, including lawyer Ron Haley, said during a press conference that sex was consensual, and Haley reiterated his past arguments that a short video of Brooks leaving Reggie's bar reflects the suspects’ innocence.

"The two defendants who engaged in consensual sexual acts with Ms. Brooks did so after obtaining verbal consent," Haley said, according to WVUE-TV. "Ms. Brooks left the car on her own volition, saying she would get an Uber. She is seen on video leaving the car, unharmed and in good health. This will be confirmed by video at a later date."

Joe Long, who represents another one of the suspects, went further, telling reporters, "If Ms. Brooks was alive, this would not be a crime."

"She would not have complained about it at all," Long said during a press conference. "The only reason it’s there is because the understandable anger in the community wants someone to pay for her death. And we understand that, but our clients did not do that."

MADISON BROOKS' FAMILY ‘BLOWN AWAY BY CLAIMS LSU STUDENT ’WOUND NOT HAVE COMPLAINED ABOUT ALLEGED RAPE

Miller said he was "blown away" by those claims and said Brooks' family plans to "set the record straight."

"She was raped. Rape is rape," Miller told Fox News Digital in a previous interview. "It’s just a horrific, terrible situation. And to the extent that those involved with the alleged rapist want to blame the victim and show up at press conferences and say things … we're standing up for Maddie. That's not right."

Madison Brooks smiling for camera

Undated photo shows Madison Brooks, posing for a photo. (Instagram/@madibrookss)

A small wooden cross covered with flowers by the side of a highway

A memorial on the 8800 block on Burbank Drive in Baton Rouge, Louisiana on Tuesday, January 25, 2023. The memorial is in honor of Madison Brooks, who was fatally struck in this approximate location on January 15, 2023.  (KG/Mega for Fox News Digital)

He added, "She was a victim of a horrific rape, which led to her death."

Washington has been arrested two more times in connection with alleged rapes in Livingston Parish in 2020 and the same area of East Baton Rouge in October 2022. 

SUSPECT IN LSU STUDENT MADISON BROOKS' ALLEGED RAPE ARRESTED AGAIN, ACCUSED OF THIRD SEX CRIME

In 2020, he was 16 and his alleged victim was 12, according to court documents, and the more recent rape accusation nearly mimicked the circumstances in Brooks' alleged rape. 

Like Brooks, the victim in the October 2022 incident drank at Reggie's and met Washington and another man, who was referred to in court documents as her "acquaintance," 18-year-old Karson Jones. 

Casen Carver, Kaivon Deondre Washington and Everett Deonte Lee

From left to right: Kaivon Deondre Washington, Casen Carver and Everett Deonte Lee. The fourth suspect, a minor, has been identified as Desmond Carter. (East Baton Rouge Sheriff's Office)

The October victim, whose age was not identified in court records, was too drunk to drive, so Jones and Washington allegedly drove her from the bar to Jones' home, where both men allegedly sexually assaulted her and force-fed her alcohol when she asked for water, according to the arrest warrant obtained by Fox News Digital.

The victim in the alleged October 2022 rape reported the crime on Jan. 25, which was one day after Washington and three other men were arrested in connection with Brooks' alleged rape.

While the case involving Brooks and the October 2022 victim will be separate, the two cases will have an impact on each other, as will the Livingston Parish case, Miller said. 

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He said the October 2022 case might proceed faster because that complainant is alive and will "carry about 80 percent" of the evidence, versus Brooks' case, where prosecutors have to piece together what happened without Brooks. 

"It's like prosecuting a murder with no body," Miller said.