A third lawsuit against a special education teacher, Garland ISD and several of the district's administrators has been filed in federal court, alleging the physical and sexual abuse of teen boys.

Not only did Michael Roell harm his students, the suits allege, district officials knew he had broken a student's arm in December 2015, weeks before they transferred him to Hudson Middle School in Sachse.

Guadalupe Mares says that within months, her son, now 16, was victimized at Hudson. Facts outlined in her Dec. 20 suit draw from those filed in June by Steven and Nora Schutt and in July by Cherish Hooper.

The unnamed son has autism and moderate intellectual disabilities. He was in the special education program at Hudson but, like Hooper's son, did not require assistance in the restroom.

Mares' suit claims that Roell, 36, touched her son and Hooper's son in the restroom under the guise of teaching them "to shake excess urine from their penis after urinating."

"There is very, very strong circumstantial evidence," said Martin Cirkiel, the attorney for Mares and her son. "We have a young man who can speak and called out in class, and everybody heard it, 'If you touch me again, I'm going to call police.' "

Roell faces a single charge out of Sachse of indecency with a child by contact, a second-degree felony. There are no criminal charges in Garland ISD, site of the Pathfinder Achievement Center, where the Schutts say Roell broke their son's arm in a school restroom.

Citing the pending litigation, a Garland ISD spokesman and the outside attorney hired to represent the district and its employee defendants other than Roell declined to comment. Roell's attorney could not be reached for comment on this story.

Cirkiel, who represents plaintiffs in all three suits, said he hopes to combine the cases to allow a single judge to handle scheduling, trial and discovery matters.

Among individual employees named as defendants last week were two listed as "unknown school administrators" in the previous suits.

The newly named defendants are Gradyne Brown, the district's executive director of human resources, and Michele Burford, a special education coordinator. The lawsuit said Burford met with the Schutts to view video of the Dec. 10, 2015, incident in which their son's arm was broken.

Pathfinder principal Leslie Coburn, Pathfinder nurse Carol Campbell and former Hudson principal Jennifer Benavidez are also listed as individual defendants. Plaintiffs claim none of them reported abuse to Child Protective Services or police.

The district has not met other responsibilities to victims, Mares' suit states. Her boy was not provided a psychological assessment or counseling, provided an aide or shadow to observe him at school, or a program on social skills to teach him to deal with sexual harassment.

Furthermore, the suit states that Mares and her son were not told who was responsible for investigating sexual harassment, as required by Title IX federal regulations, or of their right to file grievances with the Texas Education Agency or the Office of Civil Rights.

The family seeks undetermined damages for physical pain, medical expenses, mental anguish and various out-of-pocket expenses. They also seek punitive damages.

Meanwhile, Roell's attorney has filed to have the criminal case dismissed, claiming that his Sixth Amendment right to a speedy trial has been denied. The TEA lists its investigation of Roell as ongoing.

Arrested in June 2016 and indicted by a grand jury that September, Roell is scheduled to go to trial March 5. Though he has been out since posting $5,000 bond, his attorney claims the amount of time that has passed impedes the accuracy of the witness testimony.

A ruling on the Sixth Amendment claim and on the competency of some of the witnesses is scheduled Jan. 18 in a Dallas County criminal court.