LOS ANGELES (KTLA) -- The Los Angeles Unified School District sex abuse scandal continues to grow, as new allegations surface involving a former substitute teacher.
The Los Angeles Times reports that George Hernandez, 45, was investigated on three separate occasions for sexual misconduct involving young students.
Hernandez was a frequent substitute teacher for five years in the LAUSD.
The first allegation against Hernandez came in 2004, a year after he started teaching at L.A. Unified.
He was accused of touching himself while reading to a student at Figueroa Elementary School in South L.A.
Investigators talked to the alleged victim, but prosecutors determined there was not enough evidence to bring charges.
Then, in 2006, three girls at 68th Street Elementary School, also in South L.A., reported that Hernandez had rubbed their backs, shoulders and buttocks in a way that made them uncomfortable.
Investigators could not confirm the allegations, and no arrest was made.
In 2007, Hernandez was accused of touching a girl's genitals on multiple occasions at Russell Elementary School in Florence-Firestone.
Prosecutors again declined to pursue the case, but Hernandez resigned after the investigation.
His last day of work was in June 2007, and he resigned on Sept. 28, district officials said.
That was not the end of Hernandez's teaching career, however. Weeks later, he began substitute teaching in Inglewood.
He taught for the Inglewood Unified School District for nearly three years, until police found a videotape they say shows him molesting a second-grade girl at school.
His first assignment was at Beulah Payne Elementary staring in Feb. 2008, where police say he molested a girl who was 7 years old at the time.
The alleged abuse was not uncovered until Sept. 2010, when an 11-year-old girl reported that a man in an SUV had pulled up to her outside Gage Middle School in Huntington Park and exposed himself.
Police tracked Hernandez down from his license plate number.
They found over 150 videotapes in his garage apartment. Two dozen of them contained "inappropriate" material, according to police.
The 14-minute video of the second-grader, filmed inside Hernandez's classroom, is described in a police report reviewed by the Times.
Hernandez can be seen reaching under the girl's clothing and pulling her onto his lap. Another student comes into to classroom at one point, and Hernandez tells her to leave.