KABUL (Agencies) - Three Americans and a British soldier died in fighting Friday in southern Afghanistan, raising to 34 the number of US troops killed in the war so far this month. Nato said Friday that the two Americans died in an insurgent attack and another died in a roadside bomb explosion, but did not provide further details. The US command confirmed their nationalities but did not specify where they died. In London, the British Defense Ministry said one of its soldiers was killed by in an explosion in Helmand province, taking the countrys military death toll to one short of 300. The British soldier was killed in an explosion in Nahr-e Saraj district of Helmand province, where most of Britains 9,500 troops in Afghanistan are based, the Ministry said. June is shaping up to be one of the deadliest months for U.S. troops in the nearly 9-year-old Afghan war, as insurgents have stepped up attacks in response to a Nato push into Taliban strongholds in the south. The deadliest month for US troops in Afghanistan was October 2009, when 59 Americans died. In all, some 52 international troops have been killed in the country so far this month. The deadliest month of the war for international forces was in July 2009 when 75 troops, including 44 Americans, were killed.