More sad news from Afg KABUL, Afghanistan (CNN) -- Four soldiers with the NATO-led international force in Afghanistan were killed Monday when a suicide bomber rammed his vehicle into their convoy, officials said. The attack in the Helmand province in southern Afghanistan also killed three Afghans and wounded four other soldiers and several Afghans, officials said. Two of the soldiers killed were Danes, a Danish military spokesman told CNN. The nationalities of the other two soldiers who died were not immediately available. The soldiers were part of NATO's International Security Assistance Force (ISAF), an alliance of about 40 nations charged with supporting the Afghan government in maintaining security. Most of the troops stationed in Helmand as part of the force are British. Erik Boettger, the Danish military spokesman, said the convoy was on its way to monitor a school project when it was struck by the bomber's vehicle. Separately, another soldier with the NATO-led alliance was killed in an attack in Zangabad on Sunday. The Canadian soldier was on foot patrol when he was killed in an explosion, ISAF said. Zangabad is a village southwest of Kandahar city.