World leaders have expressed grief over the AIR INDIA plane crash tragedy in Mangalore and sent their condolences to Prime Minister Manmohan Singh.<br/><br/>In a messages , Pakistan Prime Minister Yousuf Raza Gilani expressed his deepest condolences and sympathies to the the bereaved families.<br/> <br/>Bangladesh Prime Minister Sheikh Hasina expressed her deep shock at the incident and conveyed her heartfelt sympathy to the members of the bereaved families.<br/> <br/>Russian President Dmitry Medvedev sent his condolences messages to President Pratibha Patil and Prime Minister Singh expressing his deep shock at the crash.<br/> <br/>Sri Lankan President Mahinda Rajapaksa condoled the loss of lives and said the news has deeply saddened him.