La Joya teacher arrested for child’s death in hot car 

Diana Treviño-Montelongo

Police arrested a woman Thursday and charged her with criminal negligent homicide in connection to the death of a 5-year-old boy who was found unresponsive in a hot car and died at a La Joya ISD campus last month.

Diana Treviño-Montelongo, who La Joya ISD Police Chief Raul Gonzalez said is 37, was booked in the Hidalgo County Jail Thursday on a $50,000 bond and released the same day.

Gonzalez declined to release any more information about the arrest.

Treviño-Montelongo is a relative of the boy who died and she teaches at Dr. Americo Paredes Elementary in Mission, where the child was found after a 911 call.

A La Joya ISD spokesperson said Thursday that Treviño-Montelongo is on paid administrative leave, and that the district placed her on leave the day after the boy died.

Dr. Americo Paredes Elementary in Mission is seen in this undated photo. (Courtesy: Americo Paredes Elementary/Facebook)

A Mission resident, Treviño-Montelongo was named the campus teacher of the year at Paredes last semester.

In a video recognizing that achievement posted in April, Treviño-Montelongo said she was in her eighth year at the school.

“My passion for education? Well I originally wanted to be a social worker, cause I always wanted to help kids and be able to be there for them,” she says in the video. “But then I was thinking about it, and I was like, that’s gonna be kinda tough. I think being in a classroom, I can be there for them in a better way.”

About a week after the death, Justice of the Peace Juan “J.J.” Peña confirmed to The Monitor that an autopsy report indicated the boy died of heat asphyxiation after being left in a hot vehicle.

The National Weather Service recorded temperatures in the area at a high of 101 degrees the day police found the child’s body.

Speaking in generic terms, Hidalgo County Health Authority Ivan Melendez told The Monitor earlier this month that a child left in a hot car in the Rio Grande Valley would likely be unconscious within an hour and dead within two.