It's alleged Daniel Menard, now the Afghanistan head for private security corporation GardaWorld, was detained on gun smuggling charges. But a GardaWorldspokesman couldn't confirm those details.
Joe Gavaghan told CBC News that Menard was detained by Afghan officials because of "administrative issues related to licensing of the company's work in Afghanistan."
A newspaper carrying a report from Kabul on Thursday alleged Menard had been accused of possessing military equipment without permission, including 129 rifles and 148 radios.
Afghanistan has tough rules for private military contractors in Afghanistan regarding the possession and use of weapons and other military gear.
Menard is GardaWorld's managing director in Afghanistan, where he's responsible for the company's operations, "including existing and new contracts with the U.S. government, non-governmental and commercial clients," according to the company's website.
Canada's Foreign Affairs Department said it is aware of the arrest, and that "consular services are being provided to a Canadian citizen who has been detained in Afghanistan."
Menard once headed Canada's military mission in Afghanistan. His tenure in the country was cut short in 2010 when he was charged with fraternization.
Menard later admitted to the sexual liaison that wrecked his career and resulted in him being sent back to Canada in disgrace.
He was charged and later pleaded guilty to two counts of conduct to the prejudice of good order and discipline, in violation of the National Defence Act.
By the time he was convicted, Menard had already left the military, but was symbolically reduced in rank. He was also fined $7,000.