BUENOS AIRES – The death toll from the bus accident over the weekend in the western Argentine province of Mendoza has risen to 15, officials told EFE on Monday.
A total of 21 people, including four listed in critical condition, remain hospitalized.
Eighteen people who sustained minor injuries have been treated, released and provided with housing at a municipal shelter.
The bus was carrying children and teenagers, along with parents, from a dance club in Buenos Aires.
The accident occurred Sunday afternoon on Route 144 in a mountainous area outside the city of San Rafael.
The dance club members and their chaperones had traveled on Thursday from the city of Gran Borg to San Rafael for a competition, media reports said.
The group was returning from a visit to Malargue, a town near San Rafael, when the bus flipped over on the highway.
Investigators are trying to determine the cause of the accident, but there are indications that the bus may have been speeding, Mdz Online reported.
The bus was being driven by one of the fathers and his son, the media outlet said.
On Feb. 18, 20 people were killed in Mendoza when a bus headed for Chile crashed.
Six days later, 12 people died when two buses collided head on in the eastern province of Santa Fe.