GREEN BAY - An 18-year-old Preble High School student was shot and killed during a drug robbery Friday night.

Federico Abarca of Green Bay was shot in the chest by one of four men who had arranged a drug sale but planned to rob Abarca of four THC vaporizing cartridges, or dabs. THC is the active ingredient in marijuana.

Assistant Brown County District Attorney Mary Kerrigan-Mares said Abarca was shot by Jared C. Williquette, 21, as he resisted the attempt to rob him.

Probable cause hearings were held Monday afternoon via video for all four men, where bond was set at $500,000 each.

Several people in the courtroom clapped and whistled as Court Commissioner Jane Sequin set the bonds.

Kerrigan-Mares said Abarca was in a car with Williquette, Gavin M. Rock, 17; Colton G. Kehoe, 18; and Jarid W. Stevens, 20, when they robbed him. The men all knew Williquette had a gun, said Green Bay police Cmdr. Paul Ebel.

"He said, ‘If stuff goes down, I have this,'" Ebel said.

Kehoe told investigators that he was carrying a knife that he was supposed to use to scare Abarca, but he got scared and froze. That is when Williquette pulled out a 9mm pistol, which Abarca mistook for a BB-gun, Kerrigan-Mares said.

Williquette shot Abarca once, and Kehoe pushed him out of the car in a parking lot of an apartment complex at 2324 Preble Ave., Kerrigan-Mares said.

Police were called to the parking lot at 11:11 p.m. Friday. Abarca was taken to St. Vincent Hospital, where he was pronounced dead.

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The men fled in the car and immediately left Brown County.

Ebel said police came up with one name to start, and were able to arrest two of the suspects after a traffic stop Saturday afternoon. They then got information that the others were possibly in Oconto County, where they were arrested and the gun was recovered.

Ebel said the suspects initially claimed Abarca tried to rob them, but later changed their stories.

Ebel said Rock organized the drug deal through Snapchat. Abarca and the suspects had mutual friends, he said.

During the hearing Rock cried and held his head in his hands.

Kerrigan-Mares said prosecutors expect to charge all four with armed robbery and still undetermined forms of a homicide charge.

Green Bay Police Chief Andrew Smith called Abarca's death a "tragic case” of a young person who made bad choices.

“I hope that young people can take a lesson from this and not make so many bad choices,” he said.

Most of the homicides in the Green Bay area are over drugs, and the drug is usually marijuana, Smith said.

Smith said this case and others are baffling to police because they involve small amounts of drugs.

"It's ridiculous that someone would kill someone over such a small, minuscule, meaningless amount of drugs," he said.

The men are scheduled to to be charged in court on March 6.

Press-Gazette reporter Haley BeMiller contributed to this report.