A 4-year-old boy has died from serious injuries after an unknown driver left him alone in the middle of a Florida roadway late Sunday.

Marterrance Albury was “expelled” from a green Ford Expedition near 109th and Florida Avenues around 9:45 p.m., when witnesses later reported seeing the boy in the road. Investigators later determined the boy fell out of the vehicle’s rear passenger door, striking his head on the roadway before being run over by a rear wheel. 

It's unknown whether the incident was intentional or if the door accidentally opened, but the SUV did not stop when it happened, MyFoxOrlando.com reports.

Detectives on Monday are scouring video from surveillance cameras in the area for any clues about what happened. They say the suspected vehicle is possibly a green Ford Expedition. No further details were immediately available.

Relatives of the boy told police that none of their family members drive the vehicle in question. Police said the boy’s mother is devastated by the news and that detectives have had "difficulty" questioning the boy’s 17-year-old brother.

Anyone with information regarding the incident is asked to call (800) 873-TIPS.

The Associated Press contributed to this report.