DALTON, Ga. — A mother says she was terrified as her daughter texted her while hiding inside her darkened classroom as police responded to reports of gunfire inside a Georgia high school.

Annmarie Jacobs says her daughter Emma texted that her teacher had turned the lights off and told the students to sit in a corner.

Then, in an act that brought home the danger of the situation, her daughter texted, “omg she’s putting desk in front of the door.”

Jacobs said she was about 100 miles away from Dalton High School and driving through Tennessee when she got the texts, and pulled over on the roadside, shaking.

Dalton police said 53-year-old Jesse Davidson, a social studies teacher at Dalton High School, was taken into custody after a 30- to 45-minute standoff with police.