NEWARK, Del. (CBS) – Four vehicles, including two school buses, were involved in a crash in Delaware early Monday morning.

The multi-vehicle crash happened at about 8:40 a.m. on I-95 southbound at Churchmans Marsh.

Delaware State Police say two school buses, a tractor trailer and a passenger car were involved in the crash.

Police say the school buses were not carrying any children at the time of the crash. However, there are injuries reported from the other cars involved in the crash.

Due to the crash, four lanes of I-95 southbound were shut down for several hours.

The cause of the crash remains under investigation.

Stay with CBSPhilly.com for more information as it becomes available.