Prime minister Stephen Harper expressed condolences to the families of the men, saying;
"Bases like this are tight knit. They are an extended family in every sense of the word; this family suffered a terrible loss, three terrible losses."
The deaths are the first since early September, when another so-called improvised explosive device (IED) killed Sgt. Scott Shipway.
In an unrelated event, two Canadians on foot patrol were wounded, one seriously, in an explosion in Zhari province, not far from the IED attack.