TEXAS -

Dallas police say an Oak Cliff mother who accidentally ran over her 4-year-old son this morning is not facing charges.

Fernando Avila died of his injuries soon after being rushed to Children's Medical Center.

Police said 32-year-old Anabele Avila was dropping off her two children at their grandmother's house before heading to work when the accident happened.

Avila had pulled into the driveway in the 800 block of Fouraker Street at about 7:20 a.m. She watched her 9-year-old daughter get out and head towards the house but couldn't see her son, Fernando.

Police said Avila started backing up, looking for her son, but did not realize he was behind the family suburban bent over as he picked up a box that had fallen from his backpack. By the time Avila realized she had backed up over her son, it was too late.

Police said Fernando suffered critical injuries head to toe and was rushed to the hospital in critical injuries. Avila was extremely distraught, authorities said.

Family members offered comfort until Avila left the scene with police. Police are calling the incident a tragic accident. They say the case will be referred to a Grand Jury.

Neighbor and longtime friend Jesus Tejada said it could have happened to anyone. As the father of a 4-year-old boy, he said his heart goes out to Avila, not even beginning to imagine his friend's pain. He said Avila has always been an attentive mom.

The mother has not been charged, but the case will be sent to a Dallas County Grand Jury.

Safety experts say a majority of the back over accidents involve big SUV's and children under the age of 5-year-old. They say part of the problem is that big vehicles have a lot of blind spots.