DALLAS - Many in a Pleasant Grove neighborhood mourned Sunday after news spread of David Hernandez's tragic death while playing at a garage sale Saturday.

Hernandez was to turn two in June, but now his family is speaking out in hopes the driver witnesses saw fatally struck the toddler and watched drive away will come forward.

"If you're watching me, please turn yourself in because you took the life of my little nephew and you caused big pains for my family," pled Mario Gonzalez, Hernandez's uncle, Sunday. "... Things would have been different if she had stayed instead of running away."

Witnesses said a female was backing away from the home holding the garage sale when she struck the child with her Ford truck. The boy had been playing in the yard when he was the truck rolled over him.

"She just went over him and he fell down," said Marina Alcala, a ten-year-old who witnesses the incident. "Then she went over and we screamed to go back and she screamed."

That's when witnesses said she took off in her truck, leaving the child behind.

"My little nephew, he was too innocent," Gonzales said. "He liked to play a lot. He used to run around in this yard and play."

Little Hernandez was raised in a mobile home located in Pleasant Grove, which was where his parents moved to from Mexico so that his father could work in construction.

"[He said] they snatched his son's life and that his little angel was guilty of nothing," said a translator for Hector Hernandez, the toddler's father.

"Man, I couldn't even think," said Darius Wiley, a witness at the scene. "My mind was gone. I was feeling for the mom because the mom was just lying on top of him, just trying to talk to him and comfort him and keep his eyes open."

The child was taken to Baylor Hospital, which was where he later passed away.

Police are still searching for the woman witnesses said was driving a silver Ford pickup.

E-mail jbetz@wfaa.com