Officers found Chad Greenenwald, 17, of Fox Lake, (left inset) critically wounded at the Citgo gas station on the corner of Cedar Lake Road and Rollins Road in Round Lake Beach following a shooting that occurred at Midland Drive and Sycamore Drive in Round Lake on October 4, 2023. Greenenwald later died and Demarion R. Gibert, 20, of Volo, (middle inset) and Damone Gibert, 17, of Volo, (right inset) have since been arrested and charged in the murder. | Background Photo: Craig / Captured News; Insets: Provided

A judge denied pre-trial release to two brothers charged after prosecutors say multiple gunmen surrounded a car, robbed the occupants and fatally shot a 17-year-old boy in Round Lake.

Demarion R. Gibert, 20, of Volo, and Damone Gibert, 17, of Volo, were both charged with first-degree murder and armed robbery.

The two suspects were arrested Wednesday morning after law enforcement converged on a residence in the 800 block of Richard Brown Boulevard in Volo.

Members of the FBI’s Violent Crime and Fugitive Task Force along with the Round Lake Police Department made the arrests.

Round Lake Police Chief David Prus said Demarion Gibert and Damone Gibert are both brothers. The 17-year-old is being charged as an adult.

Police converge on a home in the 800 block of Richard Brown Boulevard in Volo on Wednesday morning and arrest two suspects wanted for first-degree murder that occurred in Round Lake in October 2023. | Photo Submitted to Lake and McHenry County Scanner

The two previously resided in Round Lake Beach and recently moved to the home on Richard Brown Boulevard in Volo where they were arrested, Prus said.

Lake County Assistant State’s Attorney Jeffrey Facklam said Chad Greenenwald, 17, of Fox Lake, and two others went to the area of Diamond Jubilee Park near Midland Drive and Sycamore Drive in Round Lake on the evening of October 4, 2023.

The three were in a black Mercedes and had arranged a pre-planned meetup with others.

Prus said indications pointed to the meetup being drug-related.

5-6 subjects, including the Gibert brothers, approached the car on foot and surrounded the Mercedes, Facklam said.

Officers found a teenage boy, who later died, critically wounded at the Citgo gas station on the corner of Cedar Lake Road and Rollins Road in Round Lake Beach following a shooting that occurred at Midland Drive and Sycamore Drive in Round Lake on October 4, 2023. | Photo: Craig / Captured News

Facklam said at least three suspects were armed with guns and immediately demanded money and property from the victims, indicating the robbery was pre-planned, while pointing the guns at the occupants.

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At least two gunmen opened fire and one of the suspects shot Greenenwald, a passenger in the Mercedes, leaving him with a gunshot wound to the chest.

The Mercedes and the suspects both fled the area after approximately five shots were fired, Prus said.

Lake County Major Crime Task Force Spokesman Christopher Covelli said officers in the Round Lake area began a search around 8:20 p.m. that evening after receiving a 911 call from a cellphone.

A Round Lake Beach police officer located the black Mercedes at the Citgo gas station on the corner of Cedar Lake Road and Rollins Road in Round Lake Beach.

Officers saw the Mercedes had been damaged by gunfire and they found Greenenwald critically injured, Covelli said.

The boy was not breathing and officers began performing CPR after calling for the fire department.

Chad Greenenwald, 17, of Fox Lake, (left) died on October 4, 2023, after he was shot in Round Lake and later found unresponsive at the Citgo gas station in Round Lake Beach. Demarion R. Gibert, 20, of Volo, (middle) and Damone Gibert, 17, of Volo, (right) have been arrested and charged in the murder. | Provided Photos

Greenenwald was transported to Advocate Condell Medical Center in Libertyville where he was pronounced dead.

The Round Lake Police Department and Lake County Major Crime Task Force began a more than one-year investigation into the incident.

The Lake County State’s Attorney’s Office, Illinois State Police, Skokie Police Department, FBI and Round Lake Park Police Department assisted.

“The thoroughness and dedication of the Round Lake Detectives, including numerous interviews, legal processes, and forensic evidence, led to the development of two suspects,” Prus said Wednesday.

Facklam said one of the victims of the Mercedes was interviewed and recognized the Gibert brothers as being involved. The victim only knew of them from school but did not know their names.

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The victim provided police with their social media accounts.

Demarion Gibert and Damone Gibert were with two others in June when they led the Skokie Police Department on a multi-jurisdiction chase, Facklam said.

Officers found a teenage boy, who later died, critically wounded at the Citgo gas station on the corner of Cedar Lake Road and Rollins Road in Round Lake Beach following a shooting and robbery that occurred at Midland Drive and Sycamore Drive in Round Lake on October 4, 2023. | Photo: Craig / Captured News

The four fled from the stolen car and Demarion Gibert and Damone Gibert were both arrested.

Facklam said both brothers had backpacks in their possession and the backpacks each had two guns in them.

One of the guns from Demarion Gibert’s backpack and one of the guns from Damone Gibert’s backpack were linked to the Round Lake homicide and robbery, Facklam said.

Investigators also found messages with a significant other of Demarion Gibert where he mentioned committing a robbery with his brother. Demarion Gibert also told the female he loves her in case he goes to jail, Facklam said.

Facklam said Demarion Gibert also had messages on his phone about what was stolen from the Round Lake homicide and robbery.

Demarion Gibert had a separate arrest, also in June 2024, for an unlawful possession of a firearm case out of Schaumburg.

Arrest warrants charging the Gibert brothers were obtained in December and the two were taken into custody on Wednesday.

Officers found a teenage boy, who later died, critically wounded at the Citgo gas station on the corner of Cedar Lake Road and Rollins Road in Round Lake Beach following a shooting and robbery that occurred at Midland Drive and Sycamore Drive in Round Lake on October 4, 2023. | Photo: Craig / Captured News

Facklam said Damone Gibert admitted following his arrest that he was in the park at the time of the Round Lake homicide and robbery.

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He also admitted there was a robbery to investigators but he minimized his role in the incident, Facklam said.

Demarion Gibert and Damone Gibert appeared on Friday afternoon for detention hearings after the state’s attorney’s office filed petitions to detain them.

Lake County Judge James Newman granted both of the petitions and remanded the Gibert brothers held in custody pending trial.

Damone Gibert is being held in Hulse Juvenile Detention Center in Vernon Hills and Demarion Gibert is being held in the Lake County Jail in Waukegan.

Greenenwald’s aunt Toni Barycki said at the time of Greenenwald’s death that the family’s hearts “literally feel broken.”

“You have been through so much, and your life cut way too short. From the tiny baby who couldn’t wait to be born and came to his own baby shower, to the amazing young man who spent his last summer working so hard,” Barycki said.

“You will always be the big hearted young man who loves deeply, hugged me every time I saw you, and didn’t have enough time to do all the amazing things I know you would have done,” Barycki said.

“The tragic and sudden loss of Chad has left us with no words to express our sorrow,” she added.

The Gibert brothers are scheduled to appear in court again on February 5 for a preliminary hearing.