Three Danish soldiers were killed and one was wounded on Friday when their armored vehicle was struck by a roadside bomb or mine in Helmand province in south-west Afghanistan, the Danish Army Central Command said. Their vehicle was traveling north of the town of Gereshk in a supply column when it was struck, the army said. The injured soldier has been evacuated to a field hospital. Two Danes were killed earlier this month in fighting. Denmark has about 700 combat troops in Afghanistan. Seventeen have died in combat so far and three others were killed while trying to dismantle a mine.