KABUL (Reuters/AFP) - Six Ukrainians supplying British troops in Afghanistan were killed in a helicopter crash on Tuesday and two US Marines and an Italian soldier were killed in what could become the bloodiest month in the 8-year-old war. The administration for civil aviation in Moldova issued a statement saying the cargo Mi-26 helicopter of Moldavian aviation firm Pecotox-Air was brought down on Tuesday morning by a missile in Afghanistan. The Taliban also claimed to have shot down the chopper, a rare occurrence. The incident occurred around 8:00 am local time while the chopper was carrying out a humanitarian mission under the aegis of the international coalition in Afghanistan, it said. On board were six team members, all Ukraine nationals. Western forces confirmed a helicopter had crashed bringing supplies to a British base at Sangin in Helmand province and six foreigners were killed. Daud Ahmadi, a spokesman for the Helmand provincial administration, said an Afghan child was also killed and a man injured near the site of the crash. Fazul Haq, head of the local administration in Sangin, told AFP that he saw the chopper catch fire and crash. I was on the rooftop of a building when I saw a helicopter... Suddenly, about two kilometres from a foreign forces base in Sangin I saw the chopper catch fire, then crash down, he said. The passengers were all civilians, a spokesman for the Nato-led International Security Assistance Force (Isaf) said, speaking from the biggest Nato base in southern Afghanistan at Kandahar. A spokesman for the Taliban claimed that its fighters shot down the helicopter. It was a Chinook helicopter and we brought it down, the spokesman, Yousuf Ahmadi, told AFP by telephone. In Brussels, a Nato spokesman said the cause of the crash was under investigation but he could not confirm details of passengers on board. A total of 43 foreign soldiers have already died this month as US and British troops simultaneously launched the two biggest operations of the war to seize Helmand province, the Talibans opium-producing heartland. The highest death toll for Western forces in Afghanistan since 2001 is 46 for an entire month. US Chairman of the Joint Chiefs of Staff Admiral Michael Mullen, who arrived in Afghanistan on Tuesday, told troops at Bagram airbase that Obamas new strategy meant there would now be enough troops to win. While we have under-resourced this in previous years, were very committed to getting the resources right now for this fight, he said. I believe to the depths of my heart and soul that we can succeed here. This months dead include at least 15 British soldiers and nine US Marines, from two forces mounting unprecedented operations to seize control of Helmand, Afghanistans most violent region, half of which had been under militant control. The two Marines were killed in Helmand on Monday, US forces spokeswoman Captain Elizabeth Matthias said, giving no further details. One Italian soldier was killed and three others wounded by a roadside bomb in the west of the country, the Italian military said.