TOMS RIVER, N.J. (AP/CBS) — Authorities have identified the motorcyclist killed on the Garden State Parkway as 48-year-old Frank Stetz, who was a Wallington firefighter. According to police, Stetz’s motorcycle collided with a van driven by a teenager who allegedly was driving drunk.

READ MORE: Woman Beaten To Death With Pipe Inside Old City Office Building, Police Say

Authorities say Stetz was riding in the southbound lanes near exit 82 in Toms River when he struck the rear of the van around 8:35 p.m. Saturday.

READ: Motorcyclist Killed In Crash On Garden State Parkway

It’s not yet clear what caused the crash. Authorities say the van was in the center lane and was moving slowly or had stopped when the collision occurred.

READ MORE: Suspect Arrested After Holding Teen Girl Hostage During Barricade In Overbrook, Police Say

Authorities say no other vehicles were involved in the accident and no one else was injured.

The teen driver’s name has not been released.

Authorities say the teen was charged with drunken driving and additional charges are expected.

MORE NEWS: PennDOT Dealing With Twin Challenges As Latest Winter Storm Bears Down On Philadelphia Region

(Copyright 2016 The Associated Press. All rights reserved. This material may not be published, broadcast, rewritten or redistributed. CBS contributed to this report.)