At least 22 passengers were injured, including four seriously, after the private luxury bus they were travelling in hit a trailer truck on the Samruddhi Expressway in Maharashtra's Aurangabad district in the early hours of Wednesday, the police told news agency PTI.

The incident on the Mumbai-Nagpur high-speed carriageway took place near Phulambri in the district around 2.30 am, an official told PTI.