At least 24 people died Saturday when a bus carrying 60 passengers, including an unknown number of Haitians, plunged over a cliff in northwestern Peru, police said.

They had earlier stated the toll in Piura province as 25, before correcting it to 24.

Police at the scene told local media that the accident occurred at a difficult spot known as "Devil's Curve," but they said the cause remained under investigation.

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.

Some passengers were from Haiti, the police said.

The number of Haitian migrants in Peru has been increasing, though the situation of those on the bus remains unclear.

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