The Tamils' vigil in Trafalgar Square marks the second anniversary of the end of the 26-year civil war. Both sides of the conflict have been accused of rights abuses. Thousands of Tamils will hold a vigil in Trafalgar Square on Wednesday evening to mark the second anniversary of the end of the civil war in Sri Lanka and to call for an independent international investigation into allegations of war crimes and human rights abuses. As many as 40,000 non-combatants died in spring 2009 as the Sri Lankan government moved to crush Tamil Tiger separatists and end the island's 26-year conflict. Evidence of atrocities on both sides has emerged. Government soldiers have been accused of shelling hospitals, targeting civilians and attacking aid workers, while rebels are said to have used civilians as shields and shot those attempting to flee the fighting. A UN report last month accused both sides of potential war crimes, but its findings were dismissed as "baseless, biased and unilateral" by the Colombo government, which also tried to stall its publication.