At least 10 people were killed and 17 others injured in a bus accident Wednesday in Tungurahua, a province in Ecuador's Andean region, media reports said.

The bus went off the highway and plunged into a 250-meter (820-foot) ravine while traveling from Ambato to Pillaro, the Ecuavisa television network said.

About 40 people were aboard the bus at the time of the accident, the television network said.

The injured were taken to clinics in Ambato, Ecuavisa said.

No official reports have been released on the number of victims or the cause of the accident.

The bus "was full and the driver lost control on a curve," survivor Angel Moya told the El Comercio newspaper.

"Afterwards, it was all confusion. Three people died next to me. I survived, but this is all traumatic," Moya said. EFE