A 17-year-old boy who was killed and his friend who was injured in a single-vehicle crash on Twin Peaks Road Wednesday were students at MCAT High School.

Both boys were seniors at the alternative school in the Marana Unified School District, according to a news release from the district. 

Grief counselors will be at the school to provide support for students. 

The driver was identified as Cleve Webster by the Pima County Medical Examiner's Office. The name of the injured boy was not released.

The crash happened around 3 p.m. Wednesday on Twin Peaks Road near the Interstate 10 interchange. 

The Chevy Camaro was traveling eastbound when the driver lost control, crossed the median into westbound traffic and crashed into the off ramp retaining wall, Capt. Adam Goldberg, a Northwest fire spokesman said in a news release. 

The driver was not wearing a seat belt and had life-threatening injuries, he was pronounced dead after arriving at the emergency room at the University of Arizona Medical Center, the release said. 

The passenger, who was wearing a seatbelt, had serious injuries that were not considered to be life threatening, he was in stable condition Wednesday afternoon. 

"This incident is a very clear indication that the message of seatbelt use truly makes a difference in the potential outcomes of serious auto accidents. These outcomes can be the difference of life and death," Goldberg said in the release. 

Marana police are still investigating the circumstances that caused the crash.