A late-model BMW exploded Tuesday morning in Arlington, but police do not believe that the blast was intentional.

Arlington County police spokeswoman Det. Crystal Nosal said authorities were called to a car fire on the 2100 block of South 9th Street at about 8:30 a.m. Something in the back of the vehicle had detonated, and the fire department still is determining what caused the explosion, she said.

Nosal said it appears that the explosion was accidental. Police are questioning two people who were near the explosion site and the owner of the vehicle, who was not present at the time of the incident. All are cooperating, she said.

No one is expected to face charges.

The incident was first reported by ARLnow.com, which has photographs of the car.