The prime minister's party on Saturday called for an investigation into the car crash that injured Morgan Tsvangirai and killed his wife, but warned Zimbabweans not to jump to conclusions about the cause. Rumors that the crash that killed Susan Tsvangirai was not an accident were inevitable given the history of political violence in a country battered by economic and humanitarian crisis. "We cannot talk of foul play ... until it has been proved what has really transpired," said Tendai Biti, Tsvangirai's No. 2 in the Movement for Democratic Change party and the country's new finance minister. He added that the crash "could have been avoided" had Tsvangirai been afforded the kind of motorcade that usually travels with President Robert Mugabe. At a news conference at party headquarters in Harare, Biti called for an investigation. Saturday evening, Associated Press reporters saw Tsvangirai leaving the hospital with a baseball cap pulled over his bandaged head. His spokesman, James Maridadi, said Tsvangirai was discharged and going home.