But it took Maryland State Police several months to clear through a backlog at its computer forensics lab before the evidence of the assaults was discovered on Bell's cellphones and he was arrested, authorities have said.
The Charles County State Attorney's Office announced Monday a 206-count indictment for Carlos Deangelo Bell, 30, a stark increase from the 119-count indictment handed out in late July. He previously worked at J.P. Ryon and William B. Wade elementary schools and Benjamin Stoddert Middle School.
Bell is accused of recording some assaults on his cellphone over a almost two-year period between May 2015 and June 2017.
Bell allegedly sexually assaulted students without using protection, according to the state attorney's office, adding that they had not found that any of the victims tested positive for HIV.
Bell's original charges were for assaulting at least seven boys, mostly middle school age.
Of the 42 victims, officials said they have identified 28 juveniles, and 14 remain unidentified.
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Bell lost his job in December 2016, after authorities began investigating inappropriate texts he allegedly sent to a student. The ages of the alleged victims at the time the offenses were committed range from 11 years old to 17 years old.
In addition to sexual abuse, he faces charges of various sex offenses, assault, child pornography, child exploitation, contributing to the delinquency of a minor and distribution of marijuana, among others.
While Bell purportedly sexually attacked understudies while not wearing insurance, the express lawyer's office said they didn't know about any of the casualties testing positive for HIV.
"To our parents and our community, who put their faith and trust in us to safeguard their children, I apologize on behalf of Charles County Public Schools".
Bell is still being held without bond.
Bell is scheduled to stand trial in January; if the former educator is convicted, Covington says he will seek a life sentence against the alleged sex abuser.