PENDLETON, Ore. (AP) — A tour bus careened through a guardrail along an icy Oregon highway and several hundred feet down a steep embankment Sunday, killing nine people and injuring more than 20 others, authorities said.

The charter bus carrying about 40 people lost control around 10:30 a.m. on snow- and ice-covered lanes of Interstate 84 in a rural area of eastern Oregon, according to the Oregon State Police. The bus crashed near the start of a 7-mile section of road that winds down a hill.

The bus came to rest at the bottom of a snowy slope and landed upright, with little or no debris visible around the crash site.