CHICAGO (CBS) — The 18-year-old man wanted for a fatal shooting near the University of Illinois at Urbana-Champaign campus on Sunday has turned himself in to police.

Champaign police said Robbie M. Patton surrendered to the Champaign County Jail late Thursday night.

READ MORE: Aldermen To Debate Mayor's Controversial Proposal To Sue Gang Members And Seek To Seize Their Assets

Police had secured an arrest warrant for Patton on Tuesday, on charges of first-degree murder and aggravated battery with a firearm. The warrant set Patton’s bail at $5 million.

Patton was identified as the person responsible for a shooting in the 300 block of East Green Street in Champaign on Sunday. Authorities have said, after a fight inside an apartment building spilled onto the street, Patton allegedly opened fire on a group of people on the sidewalk.

George Korchev, 22, of Mundelein, was walking down the street with friends at the time, and was shot in the back, and was later pronounced dead at Carle Foundation Hospital. Three others were wounded in the shooting. Police said all four victims were just passing by, and were not involved in the fight.

READ MORE: Doggy Daycare Owner Appalled After State's Attorney Declines To Prosecute State Inspector Jose Guillen, Who Was Caught On Camera Groping Her

Approximately 30 minutes after the Green Street shooting, Champaign police responded to another shooting in the 700 Block of South State Street.

Upon arrival, officers located a victim who was transported to an area hospital for a non-critical gunshot wound. Police believe the two shootings were related.

Champaign police said the investigation of both shootings is ongoing.

MORE NEWS: Comedian, Actor Louie Anderson Dies At 68

Anyone with information about the shootings should call Champaign police at 217-351-4545. Anonymous tips also can be shared with Crime Stoppers by calling 217-373-8477, at, or by texting CCTIP plus the information to 274637. Crime Stoppers is offering a $1,000 reward for information leading to an arrest.