Police were called to Montacute Road in Athelstone just before 2pm on Sunday due to reports a Holden Sedan had left the road and crashed into a tree.

Both the driver of the car, a 17-year-old male from Rostrevor, and his passenger, a 17-year-old male from Athelstone, died at the scene, according to police.

Montacute Road has since reopened to traffic after being closed for several hours on Sunday.

Major Crash officers are continuing to investigate the circumstances surrounding the fatal crash, police said.

It brings South Australia’s road toll this year to 30, compared to 40 at the same point in 2021.

Meanwhile, about 100 people have been evacuated after a fire in the basement of an apartment building on North Terrace in the Adelaide CBD this morning.

Emergency services were called to an accommodation building on North Terrance, near Frome Street, around 5am this morning after the Metropolitan Fire Service received an automatic fire alarm notification.

“MFS firefighters arrived to find a fire in the basement and upgraded resources to nine fire trucks and 36 firefighters,” an MFS spokesperson said.

“MFS firefighters assisted the evacuation of about 100 people while extinguishing the blaze in under 25 minutes and containing the fire to the basement.

“Damage to the basement is minimal as the fire occurred in a concreted area.”

No one was injured in the blaze, police said, with crime scene investigators attending the scene this morning.