A BOY has died after being left in a sweltering car outside a school as temperatures pushed nearly 40C. The five-year-old was found unresponsive outside the Texas school but efforts to revive him were unsuccessful. La Joya ISDThe boy was related to a staff member at the school[/caption] The tragedy occurred outside the Dr. Americo Paredes Elementary in the Rio Grande Valley community of Mission. La Joya Independent School District Chief of Police Raul Gonzalez said the Hidalgo County Sheriff’s Office received a call at just after 4pm on Thursday, KSAT.com reports. Gonzalez said the boy was found in a vehicle that belonged to a staff member and he was related to that staff member. The incident is under investigation by school district police, he added. READ MORE ON WORLD NEWS NUKE ALERT Radiation leak fears at Ukraine nuclear plant after 'shelling by Russian army' WHALE OF A TIME Orcas hitting holiday boats in terrifying attacks 'to practice hunting' The boy was taken to the nurse’s office first responders attempted CPR but efforts to resuscitate the child were unsuccessful. “I ask the community to keep the family, our students and our staff at Americo Paredes Elementary in their thoughts and their prayers as they navigate through this tragic event,” said Superintendent of Schools Gisela Saenz. She also confirmed that the child was a student at the school and said the death an isolated incident Grief counsellors will be made available for students and staff. Mission is a city of around 85,700 on the U.S-Mexico border near McAllen. Children can quickly develop heatstroke and die in hot vehicles. Most read in News MOB JUSTICE Three child kidnappers burned ALIVE in village after murder of 11-year-old boy SON AND CARE Charles makes 'unusual' daily visits to Queen at Balmoral as health fears grow POOL TRAGEDY Horror as Brit baby dies after falling into swimming pool on family holiday LOCKY ESCAPE I’m an ex-burglar - 5 mistakes you make when leaving home that attract thieves LEGGING IT I’m a pest controller - why house spiders are so big & best spray to banish them BEACH TRAGEDY Woman dies in front of thousands of holidaymakers on packed Cornwall beach Last year, 23 children in the US died of heatstroke in cars, according to the National Highway Traffic Safety Administration, or NHTSA. This year there have been 18 deaths of minors, according to the website NoHeatStroke.org, which tracks cases Earlier this year Everett Smith, who was 23-months-old died. after he was left all day in the heat in a school parking lot where his mom worked as a teacher. The tragedy happened on Thursday in Bancroft, Canada, when the average temperature that day reached highs of 27.1C, CBS News reported. Read More on The Sun NO WEIGH I’m a size 26 and weigh 12st MORE than my man - we’re proud of our relationship PAY-STATION Millions of PlayStation owners could be owed 'up to £560 EACH' Considering that the car’s temperature is significantly higher than the outside temperature, depending on the time passing, the Everett must have spent at least six hours in the hot car. The toddler was taken to the hospital where he was pronounced dead.