Maryland State Police has said there was a 10-month backlog in processing digital evidence while they were investigating this case, which delayed charges.
Carlos Deangelo Bell, 32 and of Waldorf, Maryland, was served with the 206-count indictment in court on Friday. He was also a teaching assistant at Benjamin Stoddert Middle School, where numerous alleged crimes took place.
Bell, who allegedly forced the boys to perform sex acts on him and recorded the abuse on video, was investigated and removed from his job late past year after a parent found inappropriate messages from him on her son's phone.
HIV positive former school aide [indecently] assaulted 42 boys - On TUKO TV.
Bell's original charges were for assaulting at least seven boys, mostly middle school age.
Bell worked as a track coach at Maurice J. McDonough High School in Pomfret and La Plata High School in La Plata.
"The times of the charged casualties at the time the offenses were conferred run from 11 years of age to 17 years of age", the express lawyer's office said.
Bell was sacked from his position at the county's schools in December.
Although police searched Bell's work computer and did not find anything, they found child pornography on his home computer and several other personal devices.
Five of the 206 new charges accuse Bell of attempting to transfer the HIV virus to some of his victims; the indictment says none of the alleged victims tested positive.
Officials said the indictment covers 28 identified alleged victims and 14 unidentified alleged victims. The charges include sex offenses, filming child pornography, sex abuse of a minor and assault, among others, according to the indictment.
Bell was a coach at various Charles County schools between October 2014 and December 2016.
CCPS Superintendent Kimberly Hill described the allegations as "horrifying" and apologized to parents and children affected by the allegations, in a statement issued at the time.
Bell's trial date has been set for January 8, 2018.
If convicted of certain crimes listed in the indictment, the state attorney's office said it would seek life in prison for Bell.