The accident took place in the Seara municipality in southern Brazil, the Excelsior news outlet reported.
The bus driver had died at the scene, the outlet added.
Tragedia en Brasil: 5 muertos y 25 heridos tras choque de autobuses https://t.co/FfN9EOdMBy pic.twitter.com/fCwstSSYhD
— LUIS MONTOYANOTICIAS (@luismontoyamzt) December 14, 2018
#INTERNACIONAL Tragedia en Brasil: 5 muertos y 25 heridos tras choque de autobuses https://t.co/R6JMl17U34 pic.twitter.com/bCx1ol5Umh
— PALCOQUINTANARROENSE (@PalcoQR) December 14, 2018
The cause of the crash has not been determined.