UPDATE: Police ID Union County Teacher from Rahway Killed in Parkway Crash

A 30-year-old Union County teacher from Rahway was killed Sunday following a crash on the Garden State Parkway Sunday.

According to authorities, Jessica Munoz, 30, was driving north on the Garden State Parkway near milepost 157.7 in Clifton when she struck a guardrail and ultimately crashed into a concrete barrier.

Officials say Munoz - who was the only occupant in the vehicle - was pronounced dead at the scene.

The cause of the crash is under investigation.

Munoz worked at Grace Wilday Junior High School in Roselle as a special education teacher.