(DEKALB) Three suburban men were charged Monday with providing the drugs that police believe contributed to the death of a Northern Illinois University student who fell out of an 11th-floor dormitory window in September.

Michael R. Kielhack, 20; Michael Z. Montgomery, 19; and Thomas P. Quirke, 19, were all charged with two felony counts of delivery of a controlled substance, according to a statement from Northern Illinois University.

Kielhack, of the 600 block of Woodbridge Drive in Elgin, was arrested in his residence hall Friday by NIU police. Montgomery, of the 1800 block of Abriter Court in Naperville, was arrested Thursday at his home by NIU police. Quirke, of the 200 block of Oakhurst Drive in Aurora, turned himself in at the DeKalb County sheriff’s office on Friday, NIU police said.

Oluwarotimi Okedina, 19,  removed the window screen and fell from the 11th floor of the Stevenson Towers residence hall on the university campus in DeKalb on Sept. 26. Police and the DeKalb County coroner concluded Okedina, who went by Timi, fell while under the influence of LSD and marijuana, police said Monday.

Okedina was taken to Kishwaukee Hospital in DeKalb, and later died there, according to police and the  coroner’s office.

Kielhack and Montgomery were NIU students at the time of the incident, while Quirke was never a student there, police said.

All three were processed at the NIU Police Department and transferred to the DeKalb County Jail, according to an officer at the DeKalb County Jail.

Kielhack and Quirke were each released after posting 10 percent of $50,000 bonds, and Montgomery was released on a $5,000 bond. Montgomery was placed on house arrest after his release, the officer said.