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ST. CHARLES COUNTY, MO (KTVI) – A former Lindenwood student was sentenced to 30 years in prison Monday for infecting and exposing sex partners to HIV, the St. Charles County Prosecuting Attorney’s Office said.

Michael Johnson, 23, was convicted May 14 on one count of recklessly infecting another with HIV, three counts of attempting to recklessly expose another to HIV, and one count of recklessly exposing another to HIV.

Former partners testified during trial that Johnson lied to them when they asked if he was HIV positive. Johnson’s defense team said he was telling the truth and everybody else was lying.

He was sentenced to 30 years, 5.5 years, 5.5 years, 5.5 years, and 14 years, respectively. The sentences will be served concurrently, for a total of 30 years.

Johnson had been expelled from Lindenwood in 2013 after being charged.