Tsvangirai 's aide and driver also were injured in the head-on collision with a large truck , according to his spokesman , James Maridadi . NEW : Prime Minister Morgan Tsvangirai in stable condition , sources say . Comment: Crash could exacerbate fragile unity government with President Mugabe . Head-on collision bound to raise suspicion of foul play , analysts say . Ex-U.S. diplomat says other Mugabe foes have died in car crashes .
NEW : Prime Minister Morgan Tsvangirai in stable condition , sources say . Comment: Crash could exacerbate fragile unity government with President Mugabe . Head-on collision bound to raise suspicion of foul play , analysts say . Ex-U.S. diplomat says other Mugabe foes have died in car crashes .