“Texas Gas Service said the carbon monoxide monitors in the area also went off”!!
https://www.kxan.com/news/local/austin/gas-leak-at-east-austin-elementary-school-friday-aisd-tells-students-to-stay-home/?fbclid=IwAR1mll2QMAEUqbO6kc4fxMBn1yEXknuKglv_RsyNBtqoYwnl9pDRPuCIK9Q