Five New Zealanders have now been killed this month in the Bamiyan province of Afghanistan.
That’s half the total number of New Zealanders who have died in Afghanistan since our personnel first went in there a decade ago.
It's thought the people behind this most recent attack may be running their operation from inside Pakistan.
But it's also thought those who planted the explosive device had crossed over from a neighbouring province, targeting a main road.
When Prime Minister John Key was told the news, the explosion was described as “massive”.
John Key was interviewed by John Campbell – watch the video.