The cause of the crash on the Pan American Highway Tuesday night near the southern city of Ica is under investigation, Colonel Leandro Flores, chief of the highway police, told America TV.
Mourners identify dead in Italy train collision
"It was a head on type of collision," he said.
Among the dead were the two drivers and a Brazilian tourist on a bus traveling to Lima from the city of Cusco, police said.
Twenty killed, dozens injured as trains collide in Italy
Highway fatalities are common occurrences in Peru, many of them in accidents involving the country's many private bus companies.
In 2014, the last year for which official statistics are available, 2,798 people died in traffic accidents in the country.
COMMENTS
Comments are moderated and generally will be posted if they are on-topic and not abusive.
For more information, please see our Comments FAQ