Aaron Johnson, 30, of Downers Grove remained in McHenry County Jail without bond after a scheduled court appearance Friday, July 31, on multiple Class X felony drug trafficking charges tied to a months-long undercover investigation.

Johnson was due in Courtroom 302 at 9:00 a.m. on case number 2026CF647, according to McHenry County jail records. The outcome of that hearing has not been publicly released.

Johnson was arrested Thursday, July 16, in Crystal Lake by the McHenry County Sheriff's Office Narcotics Task Force after investigators say they conducted controlled buys of fentanyl, heroin, cocaine, and counterfeit pills from him between May and July 2026.

Officers recovered approximately 227 grams of fentanyl during the arrest. A search warrant executed at Johnson's Crystal Lake apartment turned up additional heroin, fentanyl, counterfeit M30 pills, packaging materials, scales, mixing equipment, and a full-face respirator used to protect against airborne fentanyl exposure, according to a McHenry County State's Attorney's Office press release.

A loaded firearm was found unsecured in a bedroom closet. Johnson's pregnant girlfriend and her 10-year-old son were present in the apartment at the time of the search.

At Johnson's initial detention hearing Friday, July 17, Judge Cynthia Lamb ordered him held pretrial, finding he posed a significant threat to community safety and a serious flight risk. Prosecutors told the court Johnson traveled to Arizona twice a month, maintained contacts in Mexico, and had used fraudulent identities to rent apartments to evade law enforcement.

"This man didn't just bring illegal drugs into McHenry County. He brought death to our county," Assistant State's Attorney Garrett Miller said at the July 17 hearing, as reported by the Northwest Herald.

Miller likened Johnson's drug supply to "a weapon of mass destruction" during the hearing.

Johnson faces charges of manufacture and delivery of a controlled substance for both fentanyl and cocaine, each in quantities of 15 but less than 100 grams. Both are Class X felonies. If convicted on the most serious charges, he could face decades in prison.

Johnson has a prior federal conviction for conspiracy to distribute a controlled substance. His defense attorney, Assistant Public Defender Gianna Venticinque, argued at the July 17 detention hearing that the charges remained allegations and noted Johnson has a baby on the way.

McHenry County State's Attorney Randi Freese said in a statement that the investigation demonstrated the narcotics task force's dedication to stopping deadly fentanyl from reaching the community, and that the quantities recovered had the potential to cause widespread harm.

Johnson's next court date and the results of the July 31 hearing were not available as of publication.