According to ABC News, citing data from the Ministry of Health, several women and children were among the victims.
The accident happened on a highway in Joxingo, Mexico City - the tour bus of the Turismo Tejeda company has failed brakes and it crashed into a building.
The vehicle transported people to Santuario del Senor de Chalma, to a Christian pilgrimage site.
Earlier it was reported that as a result of a car hitting a crowd at a holiday parade in the American city of Waukesha, Wisconsin, six people were killed and more than 40 injured.
The 39-year-old Darrell Brooks is suspected of hitting him, he is involved in the murder of five people, each charge faces up to life imprisonment.