NORFOLK, Neb. (AP) — A 24-year-old Norfolk woman accused of starting a small fire in an apartment complex hallway has been convicted of making terroristic threats.

Johna Richards pleaded guilty on Thursday after Madison County prosecutors amended the charge from felony arson. She is scheduled to be sentenced on Sept. 18.

Police say the charge stemmed from a Dec. 29 fire. A resident of the complex used a rug to put out the flames, and another resident told officers about threatening messages he’d been getting on Facebook. Investigators eventually were able to obtain information from Facebook about the person who posted the messages, and Richards was arrested.