Pakistani President Asif Ali Zardari arrives in the hometown of his wife and former Prime Minister Benazir Bhutto, to observe the fourth anniversary of her assassination.<br/> He placed flowers and rose pedals on her grave.<br/> He later sat beside the grave and prayed.<br/> The charismatic opposition leader was assassinated on December 27, in 2007 in a gun and suicide bomb attack in Rawalpindi.<br/> Zardari is expected to address a rally Tuesday where hundreds of workers belonging to Bhutto's Pakistan People's Party are expected to converge on her tomb to pay homage to the popular leader.<br/> Deborah Lutterbeck, Reuters
