The charges relate to the alleged downloading from the Internet onto an office computer of images of naked children and children engaged in sexual acts. The man was charged about two weeks ago. Police planned to release his name and the details of the charges against him today.
Ontario Provincial Police Det. Staff Sgt. Bob Matthews, lead investigator in the case and head of the OPP anti-child-pornography unit, said the case involves more than one person because the suspect had to get the information from somewhere.
Matthews wouldn't say whether there will be more arrests, but he said if there are more people involved, they aren't necessarily Defence Department employees.
There have been several seizures of computers filled with child pornography in Ontario this year. The largest ever saw Trevor Davis, 22, of Kirkland Lake, charged with possessing, making, and distributing over 30,000 computer pictures and video clips.
Defence Minister Doug Young said there is little the Defence Department can do to prevent such incidents from happening again because it's impossible for the military to monitor its employees' use of the Internet.
"It's not something that can be dealt with on any broad scale. There's no way you can totally guard against it unless we have Big Brother leaning over everybody in every office, in every building, in every home."
But Matthews said there will be questions the Defence Department will have to answer.
The National Defence Research Establishment is a high-security department where top scientists and technicians work on electronic warfare, counter measures, communications and satellite technology.
Officials refused to release the man's position.
Child pornography is defined as a picture, film, video or other visual representation of a person who is or is depicted as being under age 18 and is engaged in explicit sexual activity, or any written or visual representation that advocates or counsels sexual activity with a person under 18. The maximum penalty for possessing such material is five years in prison.