Bolivia : Driver lost control of the bus , which crashed into roadside bushes . At least 20 people were injured . Bus driver and 18 others were being treated at a hospital , the official says . Fatal bus wrecks are not rare in mountainous areas .
Police : Driver lost control of the bus , which crashed into roadside boulders . At least 26 people were injured . Bus driver and 18 others were being treated at a hospital , the government says . Fatal bus wrecks are not rare in mountainous Bolivia .