SHANGHAI, China (AP) _ An overloaded bus ran off a rain-slick mountain highway and fell 500 feet down a gorge in western China, killing 25 people, news reports said Thursday.

The bus was carrying 78 passengers when it crashed Tuesday in Sichuan province, about 1,000 miles southwest of Shanghai, the Wenhui Daily and Shanghai Youth Daily newspapers said. They said other passengers were seriously injured but gave no details.

Police are looking for the bus driver, who survived the crash and fled, the Youth Daily reported.

The long-distance bus was bound from the southeastern province of Guangdong to Da county in Sichuan.