A serious car accident closes down a portion of Route 18 near Route 33 Thursday afternoon but what caused the collision is still under investigation by Neptune Township Police.

All Route 18 North traffic was being detoured onto Route 33 yesterday with the ramp from Route 33 West to Route 18 North closed for a period of time.

Police say the Serious Collision Accident Response Team was requested to respond.

There were multiple injuries as a result but further detail has not been disclosed.