Kyra Karr, 31, dead; Reed Karr, 36, and 2 children seriously injured after unmanned semi crashes into pickup on Hwy 41 in Bartow County, Georgia; Ivan Delgado, 52, arrested on DUI charges

The crash happened Thursday evening on Highway 41 in Bartow County. A man, his wife and their toddler and infant were in the pickup truck, police said. Police said emergency crews worked two hours to free the family. Emerson Police Chief Stan Bradley said tractor-trailer driver Ivan Delgado, 52, had pulled over and was conducting a safety inspection when the big truck rolled away from him. Bradley said the driver forgot to put on the parking brake.

EMERSON, GA. | Authorities say a woman is dead after a tractor-trailer stopped beside a Georgia highway rolled downhill away from its driver and collided with a pickup truck. Police say the truck driver, whose name was not immediately released, was charged with drunken driving. Emerson Police Chief Stan Bradley said a tractor-trailer driver had pulled over on Joe Frank Harris Parkway and was conducting a safety inspection when the big truck rolled away from him. Police say emergency crews worked two hours to free a man, toddler and infant trapped inside the truck. The woman killed in the crash was not immediately identified.

Workers at the chemical plant told police Delgado was acting erratically before the incident happened. Police said Delgado was under the influence of a mind-altering substance. The family was on their way home from a missionary trip in Italy. It took firefighters two hours to free the man and two children from the vehicle. Carr was pronounced dead at the scene. Her husband, whose name has not been released, was taken to a hospital where his condition was stable at last check. The children, ages 4 and 2, were transported to a children's hospital. Delgado faces a slew of charges including involuntary manslaughter, vehicular homicide, reckless conduct and driving under the influence.

The family of a missionary from northwest Georgia, who was killed when authorities said a semitrailer smashed into the family's vehicle, has started a nonprofit foundation in her honor. Now, "Breccia Ministries: The Kyra Karr Foundation Inc.," has been incorporated as a nonprofit. Kyra Karr died at the scene of the crash, and other family members were injured. The foundation is named after the Karr family's church in Rome, Italy, where the family had served as missionaries for six years. Emerson Police Chief Stan Bradley has said the semi driver was outside the truck when it began to roll down a hill in Emerson, Georgia, on Aug. 13.