Emergency crews are on the scene of a crash on Hartford Road in Medford, New Jersey on Wednesday, police said.

The crash happened on the 200 block of Hartford Road and involved a school bus and a medical transport van, Burlington County dispatchers told CBS News Philadelphia. Police and medics responded around 6:20 a.m.

Images from Chopper 3 showed the scene of the crash. There were no students aboard the bus, according to police.

Medford police said the van was heading south on Hartford and the bus was heading north when the collision occurred, sending the van veering off the side of the road before overturning.  

Medford Police Chief Arthur Waterman said the 30-year-old male van driver was ejected into the rear compartment of the van after the crash and flown to Cooper University Hospital for treatment. He had lower body injuries. 

The driver of the school bus, a 34-year-old woman, was taken to Virtua Mount Holly Hospital with an arm injury.

The crash scene is down the road from Lenape High School. A section of Hartford Road between Church Road and Elbo Lane was closed for the investigation, Medford police said on Facebook.

A spokesperson for the Lenape Regional High School District said no members of the district community were involved in the crash.

"Our thoughts are with those who were involved," the spokesperson said in an email.

The cause of the crash is still under investigation.

This is a developing story and will be updated.