A tour bus crash on Monday in Macao that injured at least 32 mainland tourists has raised concerns among industry insiders about Macao's tourism capacity, a report by Xinhua News Agency said.

According to the Macao Public Security Police Force, the accident occurred when the bus was proceeding downhill on a sloping street close to the Ruins of St. Paul, a well-known tourist attraction. A white van rear-ended the bus, and the bus driver got out to check the situation.

The bus started rolling down the slope without the driver and rammed into a roadside clinic.