A Suffolk County grand jury indicted former Newton teacher David Ettlinger yesterday on six counts of sexually assaulting two children.
Ettlinger is now accused of assaulting three children in all, none of whom were his students. Investigators have now identified two alleged victims in Suffolk County and one in Middlesex County.
He was first charged in January with assaulting and videotaping a child, according to Jake Wark, a spokesman for Suffolk District Attorney Daniel F. Conley.
In previous court appearances, Ettlinger has pleaded not guilty to all charges.
Middlesex County prosecutors said yesterday that they discovered “troubling,’’ though not pornographic, photos of students from Underwood Elementary School in Newton among Ettlinger’s computer files.
School Superintendent David Fleishman of Newton expressed shock at the new revelations.
“This keeps happening; it’s inexplicable,’’ Fleishman said. “It’s incredibly upsetting and disturbing.’’
The Suffolk County indictment formally charges Ettlinger with two counts each of aggravated assault and battery on a child under 14, posing a child in a state of nudity, and secretly photographing a nude or semi-nude person.
He had been initially charged in West Roxbury and Brighton District Courts with possession of child pornography and sexually assaulting and videotaping a friend’s child, whom he was baby-sitting.
Ettlinger also faces five counts of aggravated indecent assault and battery on a child under 14 in Middlesex Superior Court. Those charges relate to a girl Ettlinger was hired to baby-sit.
In addition, Ettlinger also faces federal charges for his alleged role in a global Internet pornography ring, according to Wark.
Ettlinger resigned from the Newton public schools in late January after school officials moved to fire him.
News of the “troubling’’ photographs were first reported by WBZ-TV. The photos were of children on the playground and school grounds. They are not pornographic and, therefore, not illegal, said Jessica Venezia Pastore, a spokeswoman for the Middlesex district attorney’s office.
“It appears that the children were not aware’’ that the photos were being taken, Pastore said. “But we don’t think there were any hidden cameras installed in the classroom itself.’’
Newton police notified parents of identified children about the photos earlier this month, she said.
Ettlinger, who was known as a rigorous and engaging teacher, produced an annual photo collage of students and even made a video tutorial for parents on reading to their children.
The photos do not appear to be for the annual collage, Pastore said.
Fleishman said he understands that families feel violated, but that schools are still the safest place for children.
“I really believe this is a highly disturbing but unique event,’’ Fleishman said.
Ettlinger is scheduled to be arraigned in Suffolk Superior Court tomorrow.
Investigators have gone through all the evidence they discovered in Ettlinger’s Allston home, Wark said.
“We don’t foresee more charges coming out,’’ Wark said. However, he added, “Certainly we don’t foreclose any possibility.’’Fernandes can be reached at firstname.lastname@example.org. Follow her on Twitter @FernandesGlobe.