A 13-year-old passenger was killed and three other teenagers were injured in a single-vehicle wreck Wednesday morning in north Alabama, authorities said.

The teen, who was not wearing a seat belt, was a passenger in a 2015 Nissan Altima that left the road and struck a tree stump, a sign post and then a fence around 7:45 a.m. Wednesday on Blessing Road near Arley Lacey Road, approximately two miles north of Boaz, in Marshall County, said Alabama Law Enforcement Agency Senior Trooper Brandon Bailey.

The driver of the Altima, only identified as an 18-year-old, was injured and taken to a local hospital for treatment.

Two other teenage passengers — a 17-year-old and a 15-year-old — were also injured and taken to a hospital. They were not wearing seat belts, Bailey said.

Further information on the wreck was unavailable as state troopers continued to investigate the incident.