A woman believed to be in her twenties, was killed this morning in an All Terrain Vehicle accident in south Bexar County, Sheriff's Deputies tell Newsradio 1200 WOAI.

  It happened at the Alamo Junction Rail Park in the 16000 block of Old Corpus Christi Highway.

  Deputies aren't sure what happened, but they say the woman was an employee of the park, and several employees were apparently riding ATV's.

  According to its web site, Alamo Junction Rail Park is a logistics hub for transportation of various items, especially oilfield equipment bound for the Eagle Ford Shale.