Canada's military won't investigate British media reports that Canadian soldiers have smuggled heroin out of Afghanistan because such claims are bogus, a spokesman said Monday.

The military was reacting to reports Sunday in the Sunday Times and the BBC that Canadian and British troops have been sending large quantities of heroin out of Afghanistan on military aircraft taking troops back to Britain.

The heroin was then allegedly sold to drug traffickers for resale on the streets.

However, a military spokesman said Monday that following a thorough check with officials at Kandahar Air Field and through the chain of command, there are no allegations of Canadian heroin smuggling, and there will be no investigation of any smuggling.

Col. Tim Grubb, Canadian Forces provost marshal called the reports a case of media speculation.

"The Canadian Forces Military Police have confirmed with Britain's Royal Military Police that no such investigation is underway and that no such allegations have been made against either British or Canadian personnel," said Grubb in a statement.

"The Canadian Forces take all allegations against their personnel seriously and investigate where warranted."

The provost marshal is responsible for guiding the management of the Canadian Forces' security and military police.

On Sunday, Britain's Ministry of Defence said it was aware of the smuggling allegations raised in the media reports.

"Although they are unsubstantiated, we take any such reports very seriously, and we have already tightened our existing procedures both in Afghanistan and in the U.K., including through increasing the use of trained sniffer dogs.

The Ministry of Defence said it regrets "any inconvenience this causes to our service personnel. Any of our people found to be engaged in trafficking of illegal narcotics will feel the full weight of the law."

Julius Cavendish, a reporter for the Christian Science Monitor based in Kabul, said there has been no official response to the allegations from the Afghan government of President Hamid Karzai.

"But there is a likelihood that this will be useful stick for the [Afghan] government to beat back the West next time allegations surface of corruption [and] of narcotics trafficking by senior members of the government."