Investigation underway into serious bus crash in Rome.

A Rome city bus crashed into a tree on the city's Via Cassia, causing multiple injuries, four of them serious but none believed to be life-threatening.

The incident occurred after the vehicle left the road, near the junction with Via Oriolo, at around 09.00 on 16 October.

12 ambulances transported the injured to five hospitals around Rome, with firefighters assisting in removing passengers safely.

Rome's public transport company ATAC has opened an investigation into the reason behind the accident.

The bus involved in the crash operated on the 301 route and had been in service for 12 years.

Photo Alessandro Serranò AGF