View of the remains after a bus plunged off a cliff in outside of Lima, Peru. ERNESTA BENAVIDES VIA GETTY IMAGES

At least 25 people died Saturday when a bus carrying 60 passengers plunged over a cliff in northwestern Peru, police said.

The bus, belonging to the Qorianka Tours company, had departed from Lima and was en route to Tumbes, on the border with Ecuador, when for unknown reasons it left the road near the town of Organos, according to police.

Police said an unknown number of injured passengers were transported to hospitals in El Alto and Mancora, popular resorts some 1,000 kilometers (620 miles) north of Lima.

Several passengers were thrown from the bus while others were trapped inside.

Traffic accidents are common along Peru's roadways. CBS News reported more than 2,600 people were killed in such incidents in 2016. In 2018, at least 30 people were killed when a bus tumbled down a cliff onto a rocky beach Tuesday along a narrow stretch of highway known as the "Devil's Curve," Peruvian police and fire officials said. The highway was subsequently closed to bus traffic by the government.

Peru has been roiled by protests calling for the ousting of President Dina Boluarte and the return to power of her predecessor, whose removal in December launched deadly unrest and cast the nation into political chaos.