Authorities say 30 to 40 vehicles were involved in a string of wrecks in heavy fog along an approximately 2-mile stretch of Interstate 37 in rural South Texas. Texas Department of Public Safety Lt. Jason Reyes said no one was killed in the accidents Wednesday morning in Atascosa County near the community of Campbellton, about 50 miles south of San Antonio. He says two people were taken to hospitals with injuries that weren’t life-threatening. Authorities received an initial crash report about 7:15 a.m. Reyes says, “As our units were responding multiple calls came in regarding additional crashes.”