Expressing their grief and demanding answers. Thousands of people have gathered at the tomb of the former Pakistani Prime Minister Benazir Bhutto to mark the first anniversary of her assassination. The 54-year-old was killed in a gun and bomb attack shortly after holding an election rally. She had returned to Pakistan after years of self-exile and had been campaigning to return her Pakistan People’s Party to power. One man at her tomb said: “We are here to attend the first anniversary of Benazir Bhutto’s assassination. We are followers and supporters, and we will always come back here.”Bhutto’s widower, Asif Ali Zardari, took over as party leader and became president in September. Marking the anniversary, he said the attack on his wife was an attack on the viability of the state, aimed at undermining efforts to strengthen democracy and fight militancy. Numerous investigations, including those carried out by British and US authorities, blamed al Qaeda for the killing. However, many of Bhutto’s supporters say they are not happy with how those investigations were carried out. The new government, headed by Bhutto’s Pakistan People’s Party, is calling for a UN commission of inquiry. On Friday the UN Secretary General Ban Ki-moon said he hoped an inquiry could be set up in the near future to try to establish exactly who was responsible.